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

        :root {
            --bg-primary: #f0f2f5;
            --bg-surface: #ffffff;
            --bg-card: #ffffff;
            --border: #e5e7eb;
            --text: #1f2937;
            --text-muted: #6b7280;
            --accent-blue: #1d4ed8;
            --accent-purple: #0f172a;
            --accent-green: #10b981;
            --accent-pink: #0d9488;
            --gradient-hero: linear-gradient(135deg, #1d4ed8 0%, #0d9488 100%);
            --gradient-btn: linear-gradient(135deg, #2563eb 0%, #0d9488 100%);
            --radius: 16px;
            --radius-sm: 10px;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg-primary);
            color: var(--text);
            min-height: 100vh;
            overflow-x: hidden;
        }
        .hidden { display: none !important; }
        section[id],
        .workflow-steps > li,
        .section-anchor {
            scroll-margin-top: 90px;
        }
        .section-anchor { display: block; }
        .icon-sprite {
            display: none;
        }
        .ui-icon,
        .mini-icon,
        .f-icon,
        .demo-icon,
        .roi-icon {
            display: inline-block;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
            flex: 0 0 auto;
        }
        .ui-icon {
            width: 1.15em;
            height: 1.15em;
        }
        .mini-icon {
            width: 1em;
            height: 1em;
            vertical-align: -0.15em;
        }

        /* ── Animated background ── */
        body::before {
            content: '';
            position: fixed;
            top: -50%; left: -50%;
            width: 200%; height: 200%;
            background:
                radial-gradient(ellipse at 20% 50%, rgba(29, 78, 216, 0.05) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(13, 148, 136, 0.04) 0%, transparent 50%),
                radial-gradient(ellipse at 60% 80%, rgba(37, 99, 235, 0.03) 0%, transparent 50%);
            animation: bgShift 20s ease-in-out infinite alternate;
            z-index: -1;
        }
        @keyframes bgShift {
            0% { transform: translate(0, 0) rotate(0deg); }
            100% { transform: translate(-2%, -2%) rotate(3deg); }
        }

        /* ── Navigation ── */
        .nav {
            position: fixed; top: 0; left: 0; right: 0;
            z-index: 100;
            padding: 16px 40px;
            display: grid;
            grid-template-columns: auto 1fr auto;
            align-items: center;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }
        .nav-brand {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.2rem; font-weight: 700;
            text-decoration: none;
            background: var(--gradient-hero);
            -webkit-background-clip: text; background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-brand .ui-icon {
            color: var(--accent-blue);
            -webkit-text-fill-color: initial;
        }
        .nav-links {
            display: flex;
            gap: 28px;
            justify-self: center;
        }
        .nav-links a {
            color: var(--text-muted); text-decoration: none;
            font-size: 0.88rem; font-weight: 500;
            transition: color 0.2s;
        }
        .nav-links a:hover { color: var(--accent-blue); }
        .nav-toggle {
            display: none;
            justify-self: end;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            border-radius: 8px;
            background: var(--bg-card);
            color: var(--text);
            font: inherit;
            cursor: pointer;
        }

        /* ── Hero ── */
        .hero {
            text-align: center;
            padding: 140px 24px 80px;
            max-width: 980px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(29, 78, 216, 0.1);
            border: 1px solid rgba(29, 78, 216, 0.2);
            color: var(--accent-blue);
            font-size: 0.78rem; font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }
        .hero h1 {
            font-size: 3.2rem; font-weight: 800;
            line-height: 1.15;
            background: var(--gradient-hero);
            -webkit-background-clip: text; background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 20px;
        }
        .hero p {
            font-size: 1.15rem; color: var(--text-muted);
            line-height: 1.7; max-width: 760px; margin: 0 auto 24px;
        }
        .hero-workflow {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px 24px;
            margin: 0 auto 24px;
        }
        .hero-workflow li {
            position: relative;
        }
        .hero-workflow li:not(:last-child)::after {
            content: "→";
            position: absolute;
            right: -19px;
            top: 10px;
            color: var(--text-muted);
        }
        .hero-workflow a {
            display: flex;
            align-items: center;
            gap: 8px;
            min-height: 44px;
            padding: 8px 4px;
            color: var(--accent-blue);
            font-size: 0.9rem;
            font-weight: 700;
            text-decoration: none;
            border-radius: 6px;
        }
        .hero-workflow a:hover { background: rgba(29, 78, 216, 0.06); }
        .hero-workflow span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(29, 78, 216, 0.1);
            font-size: 0.75rem;
        }
        .hero-workflow a:focus-visible,
        .method-details summary:focus-visible {
            outline: 3px solid var(--accent-blue);
            outline-offset: 3px;
        }
        .hero-pill-row {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin: 0 auto 34px;
        }
        .hero-pill-row span {
            display: inline-flex;
            align-items: center;
            min-height: 34px;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.82);
            border: 1px solid rgba(148, 163, 184, 0.32);
            color: #475569;
            font-size: 0.82rem;
            font-weight: 700;
            box-shadow: 0 8px 22px rgba(15, 23, 42, 0.06);
        }

        /* ── Download Section ── */
        .download-section {
            display: flex; justify-content: center;
            gap: 16px; flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .dl-btn {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 14px 32px;
            border-radius: 12px;
            font-size: 1rem; font-weight: 600;
            cursor: pointer; transition: all 0.25s;
            text-decoration: none; border: none;
            font-family: inherit;
            min-width: 220px;
            justify-content: center;
        }
        .dl-btn .dl-copy {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            line-height: 1.25;
        }
        .dl-btn .dl-subtitle {
            font-size: 0.75rem;
            font-weight: 600;
            opacity: 0.78;
            margin-top: 3px;
        }
        .dl-btn-primary {
            background: var(--gradient-btn);
            color: white;
            box-shadow: 0 8px 32px rgba(9,132,227,0.25);
        }
        .dl-btn-primary:not(:disabled):hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 44px rgba(9,132,227,0.35);
        }
        .dl-btn-secondary {
            background: var(--bg-card);
            color: var(--text);
            border: 1px solid var(--border);
        }
        .dl-btn-secondary:not(:disabled):hover {
            border-color: rgba(29, 78, 216, 0.3);
            background: rgba(0,0,0,0.03);
        }
        .dl-btn:disabled,
        .dl-btn.is-unavailable {
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }
        .dl-btn.is-unavailable {
            background: #f8fafc;
            color: var(--text-muted);
            border: 1px dashed #cbd5e1;
        }
        .dl-btn.is-loading {
            cursor: wait;
            opacity: 0.82;
        }
        .dl-btn .ui-icon {
            width: 1.35rem;
            height: 1.35rem;
        }

        .dl-meta {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.82rem;
            margin-bottom: 8px;
        }
        .dl-meta span { margin: 0 8px; }

        .download-status {
            max-width: 620px;
            margin: 12px auto 0;
            padding: 10px 14px;
            border: 1px solid #f59e0b;
            border-radius: 10px;
            background: #fffbeb;
            color: #92400e;
            text-align: left;
            font-weight: 650;
        }
        .download-status:focus-visible {
            outline: 3px solid #2563eb;
            outline-offset: 3px;
        }

        .trial-banner {
            text-align: center;
            margin: 20px auto 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(0, 230, 118, 0.08);
            border: 1px solid rgba(0, 230, 118, 0.2);
            color: var(--accent-green);
            font-size: 0.88rem; font-weight: 600;
            padding: 10px 28px;
            border-radius: 10px;
        }
        .trial-banner-wrap { text-align: center; }

        /* ── Content Sections ── */
        .content-section,
        .features {
            max-width: 1100px;
            margin: 80px auto;
            padding: 0 24px;
        }
        .content-section h2,
        .features h2 {
            text-align: center;
            font-size: 2rem; font-weight: 700;
            margin-bottom: 12px;
        }
        .content-section .subtitle,
        .features .subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 48px;
        }
        .audience-grid,
        .research-task-grid {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 18px;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .feature-card,
        .deliverable-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }
        .feature-card:hover,
        .deliverable-card:hover {
            transform: translateY(-4px);
            border-color: rgba(29, 78, 216, 0.3);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
        }
        .feature-card .f-icon,
        .deliverable-card .f-icon {
            width: 2rem;
            height: 2rem;
            margin-bottom: 14px;
            display: block;
            color: var(--accent-blue);
        }
        .feature-card h3,
        .deliverable-card h3 {
            font-size: 1.05rem; font-weight: 600;
            margin-bottom: 8px;
        }
        .feature-card p,
        .deliverable-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .check-list {
            list-style: none;
            margin-top: 18px;
        }
        .check-list li {
            position: relative;
            padding: 6px 0 6px 18px;
            color: var(--text-muted);
            font-size: 0.86rem;
            line-height: 1.45;
        }
        .check-list li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.95em;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-green);
        }
        .workflow-section {
            max-width: 1180px;
        }
        .research-task-grid .task-output {
            margin-top: 18px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            color: var(--accent-blue);
            font-weight: 600;
        }
        .workflow-steps {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 16px;
            counter-reset: none;
        }
        .workflow-steps > li {
            position: relative;
            display: flex;
            flex-direction: column;
            padding: 22px 20px;
            background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }
        .workflow-steps .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            margin-bottom: 14px;
            border-radius: 50%;
            background: var(--gradient-btn);
            color: #ffffff;
            font-weight: 800;
            font-size: 0.9rem;
        }
        .workflow-steps h3 {
            color: var(--text);
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .workflow-steps p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.65;
        }
        .workflow-steps .workspace-label {
            color: var(--accent-blue);
            font-size: 0.75rem;
            margin-bottom: 14px;
        }
        .workflow-steps .check-list {
            margin: 12px 0 20px;
        }
        .workflow-steps .stage-outcome {
            margin-top: auto;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            color: var(--text);
            font-size: 0.82rem;
        }
        .deliverables-section {
            max-width: 980px;
        }
        .deliverables-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 20px;
        }
        .trust-band {
            margin-top: 24px;
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 26px 30px;
            border-radius: var(--radius);
            border: 1px solid rgba(13, 148, 136, 0.24);
            background: linear-gradient(135deg, rgba(13, 148, 136, 0.08), rgba(29, 78, 216, 0.06));
            box-shadow: 0 12px 36px rgba(15, 23, 42, 0.08);
        }
        .trust-band .roi-icon {
            width: 1.8rem;
            height: 1.8rem;
            color: var(--accent-green);
            margin-top: 2px;
        }
        .trust-band h3 {
            margin-bottom: 8px;
            font-size: 1.08rem;
        }
        .trust-band p {
            color: var(--text-muted);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .feature-card .tier-badge {
            display: inline-block;
            font-size: 0.68rem; font-weight: 600;
            padding: 2px 8px;
            border-radius: 4px;
            margin-top: 10px;
            letter-spacing: 0.3px;
        }
        .tier-trial  { background: rgba(149,165,166,0.15); color: #95a5a6; }
        .tier-aca    { background: rgba(52,152,219,0.15); color: #3498db; }
        .tier-pro    { background: rgba(108,92,231,0.15); color: #a29bfe; }
        .accent-heading {
            color: var(--accent-blue);
        }

        /* ── Why Us ── */
        .why-us {
            max-width: 1100px;
            margin: 80px auto;
            padding: 0 24px;
        }
        .why-us h2 {
            text-align: center;
            font-size: 2rem; font-weight: 700;
            margin-bottom: 12px;
            background: var(--gradient-hero);
            -webkit-background-clip: text; background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .why-us .subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 48px;
        }
        .why-us-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        @media (max-width: 768px) {
            .why-us-grid { grid-template-columns: 1fr; }
        }

        /* ── Pricing Preview ── */
        .pricing {
            max-width: 900px;
            margin: 80px auto;
            padding: 0 24px;
        }
        .pricing h2 {
            text-align: center;
            font-size: 2rem; font-weight: 700;
            margin-bottom: 12px;
        }
        .pricing .subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 48px;
        }
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .price-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 32px;
            position: relative;
            transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }
        .price-card:hover {
            transform: translateY(-4px);
            border-color: rgba(29, 78, 216, 0.3);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
        }
        .price-card.featured {
            border-color: rgba(13, 148, 136, 0.4);
            box-shadow: 0 0 0 1px rgba(13, 148, 136, 0.2), 0 20px 60px rgba(13, 148, 136, 0.08);
        }
        .price-card .recommend-badge {
            position: absolute; top: -12px; right: 24px;
            background: var(--gradient-btn);
            color: white; font-size: 0.7rem; font-weight: 700;
            padding: 4px 14px; border-radius: 20px;
            letter-spacing: 0.5px;
        }
        .price-card h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 4px; }
        .price-card .price {
            font-size: 2.4rem; font-weight: 800;
            color: var(--accent-blue);
            margin: 14px 0;
        }
        .price-card .price span { font-size: 0.9rem; color: var(--text-muted); font-weight: 400; }
        .price-card .features-list { list-style: none; margin-top: 18px; }
        .price-card .features-list li {
            padding: 5px 0; font-size: 0.9rem; color: var(--text-muted);
        }
        .price-card .features-list li::before {
            content: "✓ "; color: var(--accent-green); font-weight: 700;
        }
        .method-details {
            margin-top: 18px;
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }
        .method-details summary {
            padding: 8px 0;
            color: var(--accent-blue);
            font-size: 0.88rem;
            font-weight: 600;
            cursor: pointer;
        }
        .method-details ul {
            padding-left: 20px;
            margin-top: 8px;
            color: var(--text-muted);
            font-size: 0.82rem;
            line-height: 1.7;
        }
        .price-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            min-height: 44px;
            margin-top: 24px;
            border-radius: 8px;
            border: 1px solid rgba(29, 78, 216, 0.25);
            color: var(--accent-blue);
            background: rgba(29, 78, 216, 0.06);
            text-decoration: none;
            font-weight: 700;
            transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
        }
        .price-cta:hover {
            transform: translateY(-1px);
            background: rgba(29, 78, 216, 0.1);
        }
        .price-cta-primary {
            background: var(--gradient-btn);
            border-color: transparent;
            color: white;
            box-shadow: 0 10px 24px rgba(13, 148, 136, 0.18);
        }
        .price-cta-primary:hover {
            background: var(--gradient-btn);
            box-shadow: 0 14px 30px rgba(13, 148, 136, 0.24);
        }

        .roi-tip-box {
            background: rgba(16, 185, 129, 0.05);
            border: 1px solid rgba(16, 185, 129, 0.2);
            border-radius: var(--radius);
            padding: 24px 32px;
            margin: 0 auto 40px auto;
            display: flex;
            align-items: flex-start;
            gap: 20px;
            text-align: left;
            position: relative;
            overflow: hidden;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }
        .roi-tip-box::before {
            content: '';
            position: absolute; left: 0; top: 0; bottom: 0;
            width: 4px;
            background: var(--accent-green);
        }
        .roi-tip-box .roi-icon {
            width: 1.6rem;
            height: 1.6rem;
            color: var(--accent-green);
        }
        .roi-tip-box p {
            margin: 0;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .roi-tip-box p strong {
            color: var(--text);
        }

        /* ── Tech Specs ── */
        .specs {
            max-width: 700px;
            margin: 80px auto;
            padding: 0 24px;
            text-align: center;
        }
        .specs h2 {
            font-size: 1.6rem; font-weight: 700;
            margin-bottom: 28px;
        }
        .specs-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .spec-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 20px 16px;
        }
        .spec-item .s-label {
            font-size: 0.72rem; color: var(--text-muted);
            text-transform: uppercase; letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .spec-item .s-value { font-size: 1.1rem; font-weight: 600; }

        /* ── Footer ── */
        .footer {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            font-size: 0.82rem;
            border-top: 1px solid var(--border);
            margin-top: 60px;
        }
        .footer a { color: var(--accent-blue); text-decoration: none; }
        .footer a:hover { text-decoration: underline; }
        .footer-links {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: inherit;
            text-decoration: none;
        }
        .icp-record {
            margin-bottom: 8px;
        }
        .icp-record a {
            color: inherit;
            text-decoration: none;
        }
        .icp-record a:hover {
            color: var(--accent-blue);
        }

        /* ── Responsive ── */
        @media (max-width: 1024px) {
            .workflow-steps,
            .research-task-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
        }
        @media (max-width: 768px) {
            .hero h1 { font-size: 2rem; }
            .audience-grid,
            .features-grid,
            .research-task-grid,
            .workflow-steps,
            .deliverables-grid { grid-template-columns: 1fr; }
            .pricing-grid { grid-template-columns: 1fr; }
            .specs-grid { grid-template-columns: 1fr; }
            body { padding-bottom: 0; }
            .nav {
                padding: 12px 20px;
                grid-template-columns: auto auto;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 1px);
                left: 0;
                right: 0;
                justify-self: stretch;
                flex-direction: column;
                gap: 0;
                padding: 8px 20px 14px;
                background: rgba(255, 255, 255, 0.97);
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
            }
            .nav-links.is-open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 0;
                font-size: 0.95rem;
                border-bottom: 1px solid rgba(229, 231, 235, 0.8);
            }
            .nav-links a:last-child {
                border-bottom: 0;
            }
            .trust-band {
                flex-direction: column;
                padding: 22px;
            }
        }
        @media (max-width: 480px) {
            .hero { padding: 120px 16px 60px; }
            .hero h1 { font-size: 1.82rem; }
            .hero p { font-size: 1rem; }
            .hero-workflow {
                display: grid;
                grid-template-columns: repeat(2, minmax(0, 1fr));
                gap: 8px;
                text-align: left;
            }
            .hero-workflow li:not(:last-child)::after { content: none; }
            .hero-workflow a {
                height: 100%;
                padding: 10px 8px;
                background: rgba(255, 255, 255, 0.82);
                border: 1px solid var(--border);
                font-size: 0.82rem;
            }
            .hero-workflow span { flex-shrink: 0; }
            .hero-pill-row {
                align-items: stretch;
                flex-direction: column;
            }
            .hero-pill-row span {
                justify-content: center;
                width: 100%;
            }
            .content-section,
            .features,
            .why-us,
            .pricing,
            .faq,
            .specs {
                margin: 64px auto;
                padding-left: 16px;
                padding-right: 16px;
            }
            .download-section { flex-direction: column; align-items: center; }
            .dl-btn { width: 100%; max-width: 360px; }
            .hero-demo-wrap { margin-top: 36px; padding: 0 12px; }
            .hero-demo-box { border-radius: 12px; box-shadow: 0 16px 36px rgba(15, 23, 42, 0.14); }
        }

        /* ── Animations ── */
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(20px); }
            to   { opacity: 1; transform: translateY(0); }
        }
        .animate-in {
            animation: fadeUp 0.6s ease-out forwards;
            opacity: 0;
        }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }
        /* ── Hero Demo ── */
        .hero-demo-wrap {
            text-align: center; margin-top: 50px; padding: 0 24px; position: relative; z-index: 10;
        }
        .hero-demo-box {
            position: relative;
            overflow: hidden;
            width: 100%;
            max-width: 920px;
            aspect-ratio: 16 / 9;
            margin: 0 auto;
            background: #ffffff;
            border: 1px solid rgba(148, 163, 184, 0.35);
            border-radius: 16px;
            box-shadow: 0 24px 60px rgba(15, 23, 42, 0.16);
        }
        .hero-demo-video {
            display: block;
            width: 100%;
            height: 100%;
            object-fit: cover;
            background: #ffffff;
        }

        /* ── Before vs After (Idea 2) ── */
        .ba-container { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
        .ba-side {
            background: #f8fafc; border-radius: 8px; border: 1px solid var(--border);
            padding: 12px; text-align: center; width: 100%; box-sizing: border-box;
        }
        .ba-side span { display: block; margin-bottom: 8px; font-weight: 600; font-size: 0.82rem; }
        .ba-side-success {
            border-color: rgba(16, 185, 129, 0.3);
            background: rgba(16, 185, 129, 0.05);
        }
        .ba-label {
            display: inline-flex !important;
            align-items: center;
            justify-content: center;
            gap: 4px;
        }
        .ba-label-muted {
            color: #ef4444;
        }
        .ba-label-success {
            color: var(--accent-green);
        }
        .ba-placeholder {
            height: 90px; background: #ffffff; border-radius: 6px;
            display: flex; align-items: center; justify-content: center;
            border: 1px dashed #cbd5e1; color: var(--text-muted); font-size: 0.8rem;
        }
        .ba-placeholder-success {
            color: var(--accent-green);
            font-weight: 600;
        }

        /* ── FAQ Section (Idea 3) ── */
        .faq { max-width: 800px; margin: 80px auto; padding: 0 24px; }
        .faq h2 { text-align: center; font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
        .faq .subtitle { text-align: center; color: var(--text-muted); margin-bottom: 40px; }
        .faq details {
            background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; margin-bottom: 12px;
            padding: 20px 24px; transition: background 0.3s, box-shadow 0.3s; cursor: pointer;
            box-shadow: 0 2px 4px rgba(0,0,0,0.02);
        }
        .faq details:hover { background: #f8fafc; }
        .faq summary {
            font-size: 1.05rem; font-weight: 600; list-style: none; display: flex; align-items: center; justify-content: space-between;
        }
        .faq summary::-webkit-details-marker { display: none; }
        .faq summary::after { content: '＋'; color: var(--accent-blue); font-size: 1.2rem; }
        .faq details[open] summary::after { content: '－'; }
        .faq details p { margin-top: 16px; margin-bottom: 0; color: var(--text-muted); line-height: 1.6; font-size: 0.95rem; }

        /* ── Sticky CTA (Idea 4) ── */
        .sticky-cta {
            position: fixed; bottom: -80px; right: 30px;
            background: var(--gradient-btn); color: white;
            padding: 14px 30px; border-radius: 30px; font-weight: 600; text-decoration: none;
            box-shadow: 0 10px 30px rgba(13, 148, 136, 0.4), 0 0 0 0 rgba(13, 148, 136, 0.7);
            transition: bottom 0.5s cubic-bezier(0.18, 0.89, 0.32, 1.28), transform 0.2s;
            z-index: 999;
            animation: pulse-shadow 2s infinite;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .sticky-cta.visible { bottom: 40px; }
        .sticky-cta:hover { transform: translateY(-4px) scale(1.03); }

        @keyframes pulse-shadow {
            0% { box-shadow: 0 10px 30px rgba(13, 148, 136, 0.4), 0 0 0 0 rgba(13, 148, 136, 0.7); }
            70% { box-shadow: 0 10px 30px rgba(13, 148, 136, 0.4), 0 0 0 15px rgba(13, 148, 136, 0); }
            100% { box-shadow: 0 10px 30px rgba(13, 148, 136, 0.4), 0 0 0 0 rgba(13, 148, 136, 0); }
        }

        /* ── SEO Tag (Idea 5) ── */
        .seo-tag {
            display: inline-block; margin-top: 14px; font-size: 0.72rem; font-weight: 600;
            color: #d4af37; background: rgba(212, 175, 55, 0.1);
            padding: 4px 10px; border-radius: 4px; border: 1px solid rgba(212, 175, 55, 0.25);
        }

        @media (max-width: 768px) {
            .sticky-cta {
                position: static;
                right: auto;
                bottom: auto;
                width: calc(100% - 32px);
                margin: 24px 16px max(16px, env(safe-area-inset-bottom));
                justify-content: center;
                text-align: center;
                border-radius: 12px;
                padding: 14px 18px;
                animation: none;
            }
            .sticky-cta.visible {
                bottom: auto;
            }
            .sticky-cta:hover {
                transform: none;
            }
        }