:root {
    --bg: #ffffff;
    --bg-alt: #f8f9fb;
    --bg-card: #ffffff;
    --bg-header: rgba(255,255,255,0.95);
    --border: #e5e7eb;
    --text: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-light: #eff6ff;
    --accent-subtle: #dbeafe;
    --green: #10b981;
    --green-hover: #059669;
    --green-light: #ecfdf5;
    --green-subtle: #d1fae5;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-full: 9999px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--bg-header);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.nav-logo {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    object-fit: cover;
}

.nav-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.01em;
}

.nav-title sup { font-size: 0.5em; vertical-align: super; }

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-brand-sep {
    color: var(--border);
    font-size: 1.2rem;
    line-height: 1;
    user-select: none;
}

.nav-services {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-service {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.15s;
    line-height: 1.3;
    white-space: nowrap;
}

.nav-service:hover { color: var(--accent); }

.nav-hamburger-wrap {
    position: relative;
}

.nav-hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.nav-hamburger:hover {
    background: var(--bg-alt);
    border-color: var(--text-tertiary);
}

.nav-hamburger svg {
    width: 20px;
    height: 20px;
    stroke: var(--text);
}

.nav-hamburger-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: all 0.15s ease;
    z-index: 200;
}

.nav-hamburger-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-menu-label {
    padding: 10px 16px 4px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text);
    text-decoration: none;
    transition: background 0.1s;
}

.nav-menu-item .menu-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    opacity: 0.55;
}

.nav-menu-item--primary {
    font-size: 0.88rem;
    font-weight: 600;
}

.nav-menu-item--primary .menu-icon {
    width: 18px;
    height: 18px;
    opacity: 1;
}

.nav-menu-item--secondary {
    color: var(--text-secondary);
}

.nav-menu-item:hover { background: var(--bg-alt); }
.nav-menu-item:last-child { border-radius: 0 0 var(--radius) var(--radius); }

.nav-menu-divider {
    height: 1px;
    background: var(--border);
    margin: 4px 0;
}


.hero {
    padding: 140px 24px 80px;
    text-align: center;
}

.hero-inner {
    max-width: 760px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid var(--accent-subtle);
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text);
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 40px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--accent);
    color: #fff;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-green {
    background: var(--green);
}

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

.btn-secondary {
    display: inline-block;
    padding: 14px 32px;
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-secondary:hover { border-color: var(--green); color: var(--green); }

.hero-trust {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.trust-item svg { color: var(--accent); flex-shrink: 0; }

.section-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.section-title sup { font-size: 0.5em; }

.section-desc {
    text-align: center;
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

.product-section {
    padding: 80px 24px;
    background: var(--bg-alt);
}

.product-section-alt {
    background: var(--bg);
}

.product-header {
    text-align: center;
    margin-bottom: 8px;
}

.product-badge {
    display: inline-block;
    padding: 5px 14px;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.product-badge-blue {
    background: var(--accent-light);
    color: var(--accent);
    border: 1px solid var(--accent-subtle);
}

.product-badge-green {
    background: var(--green-light);
    color: var(--green);
    border: 1px solid var(--green-subtle);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: all 0.2s;
}

.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    margin-bottom: 16px;
}

.feature-icon-green {
    background: var(--green-light);
    color: var(--green);
}

.feature-card-green:hover { box-shadow: var(--shadow-md); }

.feature-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.product-steps {
    margin-top: 48px;
}

.steps-heading {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 32px;
    color: var(--text);
}

.steps {
    display: flex;
    align-items: flex-start;
    gap: 0;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
    padding: 0 20px;
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--accent);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0 auto 16px;
}

.step-number-green {
    background: var(--green);
}

.step-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.step-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-divider {
    width: 60px;
    height: 2px;
    background: var(--border);
    margin-top: 24px;
    flex-shrink: 0;
}

.pricing {
    padding: 80px 24px;
    background: var(--bg-alt);
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    max-width: 960px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-card);
    border: 2px solid var(--accent);
    border-radius: var(--radius);
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
}

.pricing-card-footer {
    margin-top: auto;
}

.pricing-card-sublink {
    text-align: center;
    margin-top: 10px;
}

.pricing-card-sublink--placeholder {
    visibility: hidden;
}

.pricing-card-green {
    border-color: var(--green);
}

.pricing-card-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.pricing-card-name sup {
    font-size: 0.45em;
    vertical-align: super;
}

.pricing-card-name-green {
    color: var(--green);
}

.pricing-card-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 24px;
}

.price-amount {
    margin-bottom: 32px;
}

.price-symbol {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    vertical-align: super;
}

.price-value {
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text);
}

.price-unit {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.price-features {
    list-style: none;
    text-align: left;
    margin-bottom: 32px;
}

.price-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--text);
    border-bottom: 1px solid var(--border);
}

.price-features li:last-child { border-bottom: none; }

.pricing-card-blue .price-features li svg { color: var(--accent); flex-shrink: 0; }
.pricing-card-green .price-features li svg { color: var(--green); flex-shrink: 0; }

.btn-full { width: 100%; text-align: center; justify-content: center; }

.landing-footer {
    padding: 40px 24px;
    border-top: 1px solid var(--border);
}

.footer-content {
    text-align: center;
}

.footer-brand { margin-bottom: 16px; }

.footer-logo {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
}

.footer-logo sup { font-size: 0.5em; }

.footer-tagline {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.footer-disclaimer {
    margin: 20px auto 16px;
    max-width: 720px;
    font-size: 0.75rem;
    line-height: 1.6;
    color: var(--text-tertiary);
    text-align: center;
}

.footer-disclaimer strong {
    color: var(--text-secondary);
}

.footer-disclaimer sup { font-size: 0.5em; }

.footer-social a {
    color: inherit;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.footer-social a:hover,
.footer-social a:focus-visible {
    opacity: 1;
}

.footer-bottom {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.footer-bottom sup { font-size: 0.55em; }

@media (max-width: 768px) {
    .hero-title { font-size: 2.2rem; }
    .hero-desc { font-size: 1rem; }
    .hero { padding: 120px 16px 60px; }
    .hero-actions { flex-direction: column; align-items: center; }
    .hero-trust { flex-direction: column; align-items: center; gap: 12px; }
    .features-grid { grid-template-columns: 1fr; }
    .steps { flex-direction: column; gap: 32px; }
    .step-divider { width: 2px; height: 32px; margin: 0 auto; }
    .section-title { font-size: 1.6rem; }
    .price-value { font-size: 3rem; }
    .pricing-card { padding: 28px; }
    .pricing-card-name { font-size: 1.25rem; }
    .pricing-grid { grid-template-columns: 1fr; }
    .nav-services { gap: 8px; }
    .nav-service { font-size: 0.7rem; }
    .nav-brand-sep { font-size: 1rem; }
    .nav-hamburger { width: 36px; height: 36px; }
    .nav-hamburger svg { width: 18px; height: 18px; }
}

.human-services-banner {
    padding: 0 0 60px;
}

.human-services-content {
    text-align: center;
    background: linear-gradient(135deg, #fdf6e3 0%, #fef9ef 50%, #fdf6e3 100%);
    border: 1px solid #e8d5a3;
    border-radius: 16px;
    padding: 48px 32px;
    max-width: 720px;
    margin: 0 auto;
}

.human-services-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, #d4a843, #c4922e);
    color: #fff;
    margin-bottom: 20px;
}

.human-services-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: #2d2006;
    margin: 0 0 12px;
    line-height: 1.4;
}

.human-services-desc {
    font-size: 0.95rem;
    color: #5c4a24;
    line-height: 1.7;
    margin: 0 0 24px;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

.human-services-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.btn-human-services {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, #d4a843, #c4922e);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
    box-shadow: 0 2px 8px rgba(196, 146, 46, 0.3);
}

.btn-human-services:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(196, 146, 46, 0.4);
}

.btn-human-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: #25d366;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
    box-shadow: 0 2px 8px rgba(37, 211, 102, 0.3);
}

.btn-human-whatsapp:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
}

@media (prefers-color-scheme: dark) {
    .human-services-content {
        background: linear-gradient(135deg, #2a2210 0%, #1f1a0e 50%, #2a2210 100%);
        border-color: #5c4a24;
    }
    .human-services-title {
        color: #f0e0b8;
    }
    .human-services-desc {
        color: #c4a86a;
    }
}

@media (max-width: 600px) {
    .human-services-content {
        padding: 36px 20px;
    }
    .human-services-title {
        font-size: 1.15rem;
    }
    .human-services-desc {
        font-size: 0.9rem;
    }
}

.faq-section {
    padding: 80px 24px;
    background: var(--bg);
}

.faq-list {
    max-width: 780px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow 0.2s;
}

.faq-item:hover {
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 18px 24px;
    background: var(--bg-card);
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    text-align: left;
    gap: 16px;
    transition: background 0.15s;
}

.faq-question:hover {
    background: var(--bg-alt);
}

.faq-chevron {
    flex-shrink: 0;
    color: var(--text-tertiary);
    transition: transform 0.25s ease;
}

.faq-item-open .faq-chevron {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item-open .faq-answer {
    max-height: 800px;
}

.faq-answer-inner {
    padding: 0 24px 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.faq-answer-inner p {
    margin-bottom: 12px;
}

.faq-answer-inner p:last-child {
    margin-bottom: 0;
}

.faq-answer-inner a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.faq-answer-inner a:hover {
    text-decoration: underline;
}

.faq-comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
    font-size: 0.85rem;
}

.faq-comparison-table th,
.faq-comparison-table td {
    padding: 10px 14px;
    border: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.faq-comparison-table thead th {
    background: var(--bg-alt);
    font-weight: 600;
    color: var(--text);
    font-size: 0.8rem;
}

.faq-comparison-table tbody td:first-child {
    white-space: nowrap;
    background: var(--bg-alt);
    width: 120px;
}

.faq-comparison-table a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.faq-comparison-table a:hover {
    text-decoration: underline;
}

@media (prefers-color-scheme: dark) {
    .faq-question {
        background: var(--bg-card);
    }
}

@media (max-width: 600px) {
    .faq-section {
        padding: 60px 16px;
    }
    .faq-question {
        padding: 16px 18px;
        font-size: 0.9rem;
    }
    .faq-answer-inner {
        padding: 0 18px 16px;
        font-size: 0.85rem;
    }
    .faq-comparison-table {
        font-size: 0.78rem;
    }
    .faq-comparison-table th,
    .faq-comparison-table td {
        padding: 8px 10px;
    }
    .faq-comparison-table tbody td:first-child {
        white-space: normal;
        width: auto;
    }
}

.fee-estimator-row {
    margin-top: 48px;
    max-width: 960px;
    margin-left: auto;
    margin-right: auto;
}

.fee-estimator-row-title {
    text-align: center;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

.fee-estimator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.fee-estimator-box {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--border);
    transition: box-shadow 0.2s;
}

.fee-estimator-box:hover {
    box-shadow: var(--shadow-md);
}

.fee-estimator-box-blue .fee-estimator-input:focus {
    border-color: var(--accent);
}

.fee-estimator-box-green .fee-estimator-input:focus,
.fee-estimator-input-green:focus {
    border-color: var(--green);
}

.fee-estimator-box-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 4px;
}

.fee-estimator-box-header-green {
    color: var(--green);
}

.fee-estimator-box-rate {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    margin-bottom: 16px;
}

.fee-estimator-inputs {
    display: flex;
    gap: 10px;
    align-items: center;
}

.fee-estimator-field {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
}

.fee-estimator-field-wide {
    flex: 1;
}

.fee-estimator-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    font-family: inherit;
    background: var(--bg-alt);
    color: var(--text);
    outline: none;
    transition: border-color 0.15s, background 0.15s;
    -moz-appearance: textfield;
}

.fee-estimator-input::-webkit-outer-spin-button,
.fee-estimator-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.fee-estimator-input:focus {
    background: var(--bg-card);
}

.fee-estimator-unit {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.fee-estimator-result {
    margin-top: 14px;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--accent);
    min-height: 1.5em;
    letter-spacing: -0.01em;
}

.fee-estimator-result-green {
    color: var(--green);
}

@media (max-width: 768px) {
    .fee-estimator-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

@media (max-width: 400px) {
    .fee-estimator-inputs {
        flex-direction: column;
        gap: 8px;
    }
    .fee-estimator-field {
        width: 100%;
    }
    .fee-estimator-box {
        padding: 18px;
    }
}

.sample-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--accent);
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    text-decoration: none;
    transition: opacity 0.15s;
}

.sample-link:hover {
    opacity: 0.75;
}

.sample-link svg {
    flex-shrink: 0;
}

.sample-lightbox {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0,0,0,0.8);
    align-items: center;
    justify-content: center;
    padding: 24px;
    cursor: pointer;
}

.sample-lightbox.open {
    display: flex;
}

.sample-lightbox-inner {
    position: relative;
    max-width: 700px;
    max-height: 90vh;
    cursor: default;
}

.sample-lightbox-img {
    display: block;
    max-width: 100%;
    max-height: 85vh;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.sample-lightbox-close {
    position: absolute;
    top: -12px;
    right: -12px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    color: #333;
    font-size: 18px;
    line-height: 1;
    transition: background 0.15s;
}

.sample-lightbox-close:hover {
    background: #f0f0f0;
}

.walkthrough-demo {
    margin-top: 32px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-card);
    box-shadow: var(--shadow-md);
}
.walkthrough-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
}
.walkthrough-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border);
}
.walkthrough-dot:nth-child(1) { background: #ef4444; }
.walkthrough-dot:nth-child(2) { background: #f59e0b; }
.walkthrough-dot:nth-child(3) { background: #22c55e; }
.walkthrough-title {
    flex: 1;
    text-align: center;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-right: 38px;
}
.walkthrough-body {
    position: relative;
    height: 320px;
    overflow: hidden;
}
.walkthrough-scene {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px 24px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
    pointer-events: none;
}
.walkthrough-scene.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
.walkthrough-step-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 14px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}
.walkthrough-step-badge-blue {
    background: var(--accent-light);
    color: var(--accent);
}
.walkthrough-step-badge-green {
    background: var(--green-light);
    color: var(--green);
}
.walkthrough-scene-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}
.walkthrough-scene-desc {
    font-size: 13px;
    color: var(--text-secondary);
    text-align: center;
    max-width: 420px;
    line-height: 1.6;
    margin-bottom: 20px;
}
.walkthrough-mock {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    border: 2px dashed var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-alt);
    min-width: 280px;
    transition: border-color 0.4s ease, background 0.4s ease;
}
.walkthrough-scene.active .walkthrough-mock {
    animation: mockPulse 2s ease-in-out infinite;
}
@keyframes mockPulse {
    0%, 100% { border-color: var(--border); }
    50% { border-color: var(--accent); }
}
.walkthrough-mock-green.active .walkthrough-mock,
.active .walkthrough-mock-green {
    animation-name: mockPulseGreen;
}
@keyframes mockPulseGreen {
    0%, 100% { border-color: var(--border); }
    50% { border-color: var(--green); }
}
.walkthrough-mock-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.walkthrough-mock-icon-blue {
    background: var(--accent-light);
    color: var(--accent);
}
.walkthrough-mock-icon-green {
    background: var(--green-light);
    color: var(--green);
}
.walkthrough-mock-text {
    display: flex;
    flex-direction: column;
    gap: 3px;
}
.walkthrough-mock-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
}
.walkthrough-mock-sub {
    font-size: 11px;
    color: var(--text-tertiary);
}
.walkthrough-progress {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    background: var(--bg-alt);
}
.walkthrough-pip {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border);
    transition: background 0.3s ease, transform 0.3s ease;
}
.walkthrough-pip.active {
    background: var(--accent);
    transform: scale(1.3);
}
.walkthrough-pip.active-green {
    background: var(--green);
    transform: scale(1.3);
}
.walkthrough-file-rows {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 280px;
}
.walkthrough-file-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    opacity: 0;
    transform: translateX(-10px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}
.walkthrough-scene.active .walkthrough-file-row {
    opacity: 1;
    transform: translateX(0);
}
.walkthrough-scene.active .walkthrough-file-row:nth-child(2) {
    transition-delay: 0.15s;
}
.walkthrough-scene.active .walkthrough-file-row:nth-child(3) {
    transition-delay: 0.3s;
}
.walkthrough-file-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 11px;
    font-weight: 700;
    color: #fff;
}
.walkthrough-file-icon-blue { background: var(--accent); }
.walkthrough-file-icon-green { background: var(--green); }
.walkthrough-file-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}
.walkthrough-file-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--text);
}
.walkthrough-file-meta {
    font-size: 10px;
    color: var(--text-tertiary);
}
.walkthrough-file-status {
    font-size: 11px;
    font-weight: 600;
}
.walkthrough-file-status-blue { color: var(--accent); }
.walkthrough-file-status-green { color: var(--green); }
.walkthrough-price-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 16px 32px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    min-width: 220px;
}
.walkthrough-price-label {
    font-size: 11px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}
.walkthrough-price-amount {
    font-size: 28px;
    font-weight: 800;
    color: var(--text);
}
.walkthrough-price-detail {
    font-size: 11px;
    color: var(--text-secondary);
}
.walkthrough-pay-btn {
    margin-top: 8px;
    padding: 8px 28px;
    border-radius: var(--radius-sm);
    border: none;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    cursor: default;
}
.walkthrough-pay-btn-blue { background: var(--accent); }
.walkthrough-pay-btn-green { background: var(--green); }
@media (prefers-reduced-motion: reduce) {
    .walkthrough-scene { transition: none; }
    .walkthrough-pip { transition: none; }
    .walkthrough-scene.active .walkthrough-mock { animation: none; }
    .walkthrough-file-row { transition: none; }
}
@media (max-width: 768px) {
    .walkthrough-body { height: 300px; }
    .walkthrough-scene { padding: 24px 16px; }
    .walkthrough-scene-title { font-size: 16px; }
    .walkthrough-mock { min-width: auto; }
    .walkthrough-file-rows { min-width: auto; }
    .walkthrough-price-card { min-width: auto; }
}