:root {
            --white: #ffffff;
            --text-primary: #1d1d1f;
            --text-secondary: #6e6e73;
            --text-tertiary: #86868b;
            --border: #d2d2d7;
            --border-light: #e8e8ed;
            --accent: #0071e3;
            --accent-hover: #0077ed;
            --surface: #f5f5f7;
            --transition-ease: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--white);
            color: var(--text-primary);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            line-height: 1.5;
        }

        /* ── Focus styling for accessibility ── */
        *:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
        }

        /* ── Navigation ── */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.72);
            backdrop-filter: saturate(180%) blur(20px);
            -webkit-backdrop-filter: saturate(180%) blur(20px);
            border-bottom: 1px solid var(--border-light);
        }

        .nav-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            height: 52px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.5px;
            transition: opacity 0.2s ease;
        }

        .logo:hover {
            opacity: 0.8;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 2rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
        }

        .nav-link {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.8125rem;
            font-weight: 500;
            transition: color 0.2s ease;
            padding: 0.5rem 0;
        }

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

        .btn-nav-waitlist {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.375rem 1rem;
            font-size: 0.8125rem;
            font-weight: 600;
            color: var(--white);
            background: var(--text-primary);
            border-radius: 10px;
            text-decoration: none;
            transition: all 0.2s ease;
        }

        .btn-nav-waitlist:hover {
            background: #2d2d2f;
            transform: scale(1.02);
        }

        .btn-nav-waitlist:active {
            transform: scale(0.98);
        }

        /* ── Hero ── */
        .hero {
            text-align: center;
            padding: 5rem 2rem 2rem;
            max-width: 700px;
            margin: 0 auto;
        }

        h1 {
            font-size: 4.5rem;
            font-weight: 700;
            line-height: 1.05;
            letter-spacing: -2.5px;
            color: var(--text-primary);
            margin-bottom: 1.25rem;
        }

        .hero-sub {
            font-size: 1.25rem;
            line-height: 1.55;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto;
        }

        .hero-instruction {
            font-size: 0.9375rem;
            line-height: 1.5;
            color: var(--text-tertiary);
            margin: 1.25rem auto 0;
            max-width: 520px;
            font-weight: 500;
        }

        /* ── Waitlist Section ── */
        .waitlist-section {
            padding: 6rem 2rem;
            background: #fafafa;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .waitlist-section::before {
            content: "";
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 113, 227, 0.08) 0%, rgba(0, 113, 227, 0) 70%);
            bottom: -150px;
            right: -100px;
            pointer-events: none;
            z-index: 1;
        }

        .waitlist-section::after {
            content: "";
            position: absolute;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(52, 199, 89, 0.05) 0%, rgba(52, 199, 89, 0) 70%);
            top: -100px;
            left: -100px;
            pointer-events: none;
            z-index: 1;
        }

        .waitlist-container {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 600px;
            background: linear-gradient(135deg, var(--white) 0%, #fbfbfd 100%);
            border-radius: 28px;
            padding: 3rem 2.5rem;
            border: 1px solid var(--border-light);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.04),
                0 0 80px rgba(0, 113, 227, 0.04);
            text-align: center;
            color: var(--text-primary);
            transition: var(--transition-ease);
        }

        .waitlist-container:hover {
            transform: translateY(-4px);
            border-color: var(--border);
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.06),
                0 0 100px rgba(0, 113, 227, 0.06);
        }

        .waitlist-container h2 {
            font-size: 2.25rem;
            font-weight: 700;
            letter-spacing: -1px;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
        }

        .waitlist-form-container p:not(.form-note) {
            color: var(--text-secondary);
            font-size: 1.0625rem;
            line-height: 1.5;
            margin-bottom: 1.75rem;
            max-width: 460px;
            margin-inline: auto;
        }

        .waitlist-form-container {
            transition: opacity 0.3s ease, transform 0.3s ease;
        }

        .waitlist-form {
            display: flex;
            gap: 0.75rem;
            max-width: 440px;
            margin: 0 auto;
            position: relative;
        }

        .waitlist-form input[type="email"] {
            flex: 1;
            padding: 0.875rem 1.25rem;
            font-size: 1rem;
            min-height: 48px;
            border: 1px solid var(--border);
            border-radius: 14px;
            background: var(--white);
            color: var(--text-primary);
            outline: none;
            transition: all 0.2s ease;
            font-family: inherit;
        }

        .waitlist-form input[type="email"]:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.15);
        }

        .waitlist-form input[type="email"]::placeholder {
            color: var(--text-tertiary);
        }

        .btn-submit {
            padding: 0 1.75rem;
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--white);
            background: var(--text-primary);
            border: none;
            border-radius: 14px;
            cursor: pointer;
            transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
            font-family: inherit;
            white-space: nowrap;
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 140px;
            position: relative;
            overflow: hidden;
        }

        .btn-submit:hover {
            background: #2d2d2f;
            transform: scale(1.02);
        }

        .btn-submit:active {
            transform: scale(0.98);
        }

        .btn-submit.loading {
            color: transparent !important;
            pointer-events: none;
        }

        .btn-submit.loading::after {
            content: "";
            position: absolute;
            width: 20px;
            height: 20px;
            top: calc(50% - 10px);
            left: calc(50% - 10px);
            border: 2.5px solid rgba(255, 255, 255, 0.2);
            border-top-color: var(--white);
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        .form-note {
            margin-top: 1.5rem;
            font-size: 0.75rem;
            color: var(--text-tertiary);
        }

        /* Success State */
        .waitlist-success {
            padding: 1rem 0;
            animation: fadeInScale 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
        }

        @keyframes fadeInScale {
            from {
                opacity: 0;
                transform: scale(0.95);
            }

            to {
                opacity: 1;
                transform: scale(1);
            }
        }

        .success-icon-wrap {
            width: 64px;
            height: 64px;
            margin: 0 auto 1.5rem;
        }

        .success-svg {
            width: 64px;
            height: 64px;
            display: block;
            stroke-width: 3.5;
            stroke: #30d158;
            stroke-miterlimit: 10;
            box-shadow: inset 0px 0px 0px rgba(48, 209, 88, 0.1);
            border-radius: 50%;
            animation: success-fill .4s ease-in-out .4s forwards, success-scale .3s ease-in-out 0s both;
        }

        .success-circle {
            stroke-dasharray: 166;
            stroke-dashoffset: 166;
            stroke-width: 3.5;
            stroke-miterlimit: 10;
            stroke: #30d158;
            fill: none;
            animation: success-stroke .6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
        }

        .success-check {
            transform-origin: 50% 50%;
            stroke-dasharray: 48;
            stroke-dashoffset: 48;
            stroke: #30d158;
            animation: success-stroke .3s cubic-bezier(0.65, 0, 0.45, 1) .8s forwards;
        }

        @keyframes success-stroke {
            100% {
                stroke-dashoffset: 0;
            }
        }

        @keyframes success-scale {

            0%,
            100% {
                transform: none;
            }

            50% {
                transform: scale3d(1.1, 1.1, 1);
            }
        }

        @keyframes success-fill {
            100% {
                box-shadow: inset 0px 0px 0px 32px rgba(48, 209, 88, 0.15);
            }
        }

        .waitlist-success h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }

        .waitlist-success p {
            color: var(--text-secondary);
            font-size: 1rem;
        }

        /* ── Demo Section ── */
        .demo-wrap {
            max-width: 1200px;
            margin: 0 auto;
            padding: 3rem 2rem 5rem;
        }

        .demo-card {
            background: var(--surface);
            border-radius: 24px;
            padding: 1.5rem;
            border: 1px solid var(--border-light);
        }

        .demo-toolbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.75rem 1rem;
            margin-bottom: 1.5rem;
            background: var(--white);
            border-radius: 14px;
            border: 1px solid var(--border-light);
        }

        .toolbar-left {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .toolbar-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #d2d2d7;
            transition: background 0.3s;
            position: relative;
        }

        .toolbar-dot.live {
            background: #34c759;
        }

        .toolbar-dot.live::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background: #34c759;
            animation: pulse-ring 1.5s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
        }

        @keyframes pulse-ring {
            0% {
                transform: scale(0.95);
                opacity: 0.8;
            }

            100% {
                transform: scale(2.5);
                opacity: 0;
            }
        }

        .toolbar-title {
            font-size: 0.8125rem;
            font-weight: 600;
            color: var(--text-secondary);
        }

        .demo-instruction {
            text-align: center;
            font-size: 0.8125rem;
            color: var(--text-tertiary);
            margin-top: 1rem;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .toolbar-right {
            display: flex;
            align-items: center;
            gap: 1.25rem;
        }

        .btn-camera {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.5rem 1.25rem;
            font-size: 0.8125rem;
            font-weight: 500;
            color: var(--white);
            background: var(--accent);
            border: none;
            border-radius: 999px;
            cursor: pointer;
            transition: var(--transition-ease);
            font-family: inherit;
        }

        .btn-camera:hover {
            background: var(--accent-hover);
        }

        .btn-camera.active {
            background: #ff3b30;
            /* Premium iOS Red */
        }

        .btn-camera.active:hover {
            background: #ff453a;
        }

        .toggle-group {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            background: rgba(0, 0, 0, 0.03);
            padding: 0.5rem 1rem;
            border-radius: 999px;
            border: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            position: relative;
        }

        /* Tooltip when disabled */
        .toggle-group:has(input:disabled) {
            cursor: not-allowed;
        }

        .toggle-group:has(input:disabled)::after {
            content: "Click 'Start Camera' first";
            position: absolute;
            bottom: calc(100% + 10px);
            left: 50%;
            transform: translateX(-50%) translateY(4px);
            background: var(--text-primary);
            color: var(--white);
            padding: 0.5rem 0.75rem;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 8px;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            z-index: 10;
        }

        .toggle-group:has(input:disabled)::before {
            content: "";
            position: absolute;
            bottom: calc(100% + 4px);
            left: 50%;
            transform: translateX(-50%) translateY(4px);
            border-width: 6px 6px 0;
            border-style: solid;
            border-color: var(--text-primary) transparent;
            display: block;
            width: 0;
            opacity: 0;
            pointer-events: none;
            transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
            z-index: 10;
        }

        .toggle-group:has(input:disabled):hover::after,
        .toggle-group:has(input:disabled):hover::before {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }

        .toggle-group.highlighted {
            animation: highlight-pulse 15s infinite ease-in-out;
        }

        @keyframes highlight-pulse {

            0%,
            100% {
                border-color: rgba(0, 113, 227, 0.75);
                box-shadow: 0 0 12px rgba(0, 113, 227, 0.25);
                background: rgba(0, 113, 227, 0.06);
            }

            33.3% {
                border-color: rgba(52, 199, 89, 0.75);
                box-shadow: 0 0 12px rgba(52, 199, 89, 0.25);
                background: rgba(52, 199, 89, 0.06);
            }

            66.6% {
                border-color: rgba(255, 59, 48, 0.75);
                box-shadow: 0 0 12px rgba(255, 59, 48, 0.25);
                background: rgba(255, 59, 48, 0.06);
            }
        }

        .toggle-text {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-tertiary);
            transition: color 0.3s;
            user-select: none;
        }

        .toggle-text.active {
            color: var(--text-primary);
        }

        /* iOS-Style Toggle */
        .switch {
            position: relative;
            display: inline-block;
            width: 51px;
            height: 31px;
        }

        .switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }

        .track {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: #e9e9eb;
            border-radius: 999px;
            transition: background 0.25s;
        }

        .track::before {
            content: "";
            position: absolute;
            height: 27px;
            width: 27px;
            left: 2px;
            bottom: 2px;
            background: var(--white);
            border-radius: 50%;
            transition: transform 0.25s;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15), 0 1px 1px rgba(0, 0, 0, 0.06);
        }

        input:checked+.track {
            background: #34c759;
        }

        input:checked+.track::before {
            transform: translateX(20px);
        }

        input:disabled+.track {
            opacity: 0.5;
            cursor: not-allowed;
        }

        /* Video Grid */
        .video-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        .video-cell {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .video-panel {
            position: relative;
            aspect-ratio: 16/9;
            background: #1c1c1f;
            border-radius: 16px;
            overflow: hidden;
        }

        video {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            background: #1c1c1f;
        }

        .video-placeholder {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: #1c1c1f;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            color: #86868b;
            gap: 0.5rem;
            transition: opacity 0.3s ease;
            z-index: 5;
            pointer-events: none;
        }

        .video-placeholder.hidden {
            opacity: 0;
        }

        .placeholder-emoji {
            font-size: 2.25rem;
        }

        .video-placeholder p {
            font-size: 0.875rem;
            font-weight: 500;
        }

        .video-caption {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0 0.25rem;
        }

        .caption-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .caption-desc {
            font-size: 0.8125rem;
            color: var(--text-tertiary);
        }

        .caption-badge {
            font-size: 0.6875rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            background: var(--border-light);
            color: var(--text-tertiary);
            transition: all 0.3s;
        }

        .caption-badge.corrected {
            background: rgba(52, 199, 89, 0.12);
            color: #248a3d;
        }

        /* ── How It Works ── */
        .how-section {
            max-width: 980px;
            margin: 0 auto;
            padding: 5rem 2rem;
            text-align: center;
            border-top: 1px solid var(--border-light);
        }

        .how-section h2 {
            font-size: 2.5rem;
            font-weight: 700;
            letter-spacing: -1px;
            margin-bottom: 0.75rem;
        }

        .how-section>p {
            color: var(--text-secondary);
            font-size: 1.0625rem;
            margin-bottom: 3.5rem;
        }

        .steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            text-align: center;
        }

        .step {
            transition: transform 0.25s ease;
        }

        .step:hover {
            transform: translateY(-4px);
        }

        .step-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 1.25rem;
            background: var(--surface);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
        }

        .step h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .step p {
            color: var(--text-tertiary);
            font-size: 0.9375rem;
            line-height: 1.5;
        }

        /* ── FAQ ── */
        .faq-section {
            max-width: 700px;
            margin: 0 auto;
            padding: 5rem 2rem;
            border-top: 1px solid var(--border-light);
        }

        .faq-section h2 {
            font-size: 2.5rem;
            font-weight: 700;
            letter-spacing: -1px;
            text-align: center;
            margin-bottom: 0.75rem;
        }

        .faq-section>p {
            text-align: center;
            color: var(--text-secondary);
            font-size: 1.0625rem;
            margin-bottom: 3rem;
        }

        details {
            border-bottom: 1px solid var(--border-light);
        }

        details:first-of-type {
            border-top: 1px solid var(--border-light);
        }

        summary {
            padding: 1.25rem 0;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: color 0.2s;
        }

        summary:hover {
            color: var(--accent);
        }

        summary::-webkit-details-marker {
            display: none;
        }

        summary::after {
            content: "+";
            font-size: 1.5rem;
            font-weight: 300;
            color: var(--text-tertiary);
            transition: transform 0.3s ease;
        }

        details[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 0 1.5rem;
            font-size: 0.9375rem;
            line-height: 1.65;
            color: var(--text-secondary);
        }

        /* ── Footer ── */
        footer {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
            font-size: 0.75rem;
            color: var(--text-tertiary);
            border-top: 1px solid var(--border-light);
        }

        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-links {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-links a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: var(--accent);
            text-decoration: underline;
        }

        /* macOS Alert & Privacy Modal */
        .alert-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.25);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 200;
            animation: fadeIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .alert-box {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(30px);
            -webkit-backdrop-filter: blur(30px);
            border: 1px solid rgba(255, 255, 255, 0.4);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.05);
            width: 270px;
            padding: 1.25rem;
            border-radius: 20px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            transform: scale(0.95);
            animation: scaleIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
        }

        .privacy-box {
            width: 90%;
            max-width: 520px;
            max-height: 80vh;
            padding: 1.75rem;
            align-items: flex-start;
            text-align: left;
        }

        .privacy-body {
            overflow-y: auto;
            max-height: 55vh;
            padding-right: 0.5rem;
            font-size: 0.8125rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .privacy-body h4 {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-top: 0.5rem;
        }

        .alert-icon-wrap {
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .alert-title {
            font-size: 0.9375rem;
            font-weight: 700;
            color: #1d1d1f;
            margin-bottom: 0.375rem;
            letter-spacing: -0.01em;
        }

        .alert-desc {
            font-size: 0.75rem;
            line-height: 1.4;
            color: #515154;
            margin-bottom: 1.25rem;
        }

        .alert-buttons {
            width: 100%;
            border-top: 0.5px solid rgba(0, 0, 0, 0.15);
            padding-top: 0.75rem;
            display: flex;
            justify-content: center;
        }

        .btn-alert-ok {
            background: transparent;
            border: none;
            color: #0071e3;
            font-size: 0.875rem;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            padding: 0.25rem 0;
            transition: opacity 0.2s;
        }

        .btn-alert-ok:hover {
            opacity: 0.7;
        }

        .btn-alert-ok:active {
            opacity: 0.5;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
            }

            to {
                opacity: 1;
            }
        }

        @keyframes scaleIn {
            from {
                transform: scale(0.92);
                opacity: 0;
            }

            to {
                transform: scale(1);
                opacity: 1;
            }
        }

        /* ── Responsive ── */
        @media (max-width: 768px) {
            h1 {
                font-size: 3rem;
                letter-spacing: -1px;
            }

            .hero-sub {
                font-size: 1.0625rem;
            }

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

            .steps {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }

            .toolbar-right {
                flex-wrap: wrap;
                gap: 0.75rem;
            }

            .demo-toolbar {
                flex-direction: column;
                gap: 1rem;
                align-items: stretch;
                text-align: center;
            }

            .waitlist-form {
                flex-direction: column;
            }

            .btn-submit {
                padding: 0.875rem;
                width: 100%;
            }

            .btn-nav-waitlist {
                display: none;
            }

            .nav-right {
                gap: 1rem;
            }
        }