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

:root {
    --bg-dark: #0a0a0f;
    --bg-secondary: #121218;
    --bg-card: #151520;
    --bg-card-hover: #1a1a25;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #707080;
    --accent-blue: #6496ff;
    --accent-muted: #4a6bb8;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.12);
    --transition: all 0.2s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header - Publication Style */
.header {
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-metadata {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    padding-bottom: 12px;
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.metadata-divider {
    color: var(--text-muted);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--text-primary);
}

.header-nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-blue);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

/* Hero Section - Research Statement */
.hero {
    padding: 100px 0 120px;
    border-bottom: 1px solid var(--border-color);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-metadata {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metadata-badge {
    color: var(--text-secondary);
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    border-radius: 2px;
}

.hero-title {
    font-size: 42px;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 24px;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.hero-title .highlight {
    color: var(--accent-blue);
}

.hero-description {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
    max-width: 90%;
}

.hero-scope {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.scope-item {
    display: flex;
    gap: 12px;
    font-size: 14px;
}

.scope-label {
    color: var(--text-muted);
    font-weight: 500;
}

.scope-value {
    color: var(--text-secondary);
}

.hero-illustration {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.data-visualization {
    width: 100%;
    max-width: 500px;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.data-visualization img {
    width: 100%;
    height: auto;
    max-width: 100%;
    object-fit: contain;
    opacity: 0.8;
    filter: grayscale(15%) brightness(0.9);
    border-radius: 2px;
}

/* Section Dividers */
.section-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 60px 0;
    padding: 0 24px;
}

.divider-line {
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.divider-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
}

/* Evaluation Units */
.evaluations-section {
    padding: 80px 0;
}

.section-header {
    margin-bottom: 60px;
}

.update-date {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 400;
}

.evaluation-unit {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
    padding: 0;
    transition: var(--transition);
}

.evaluation-unit:hover {
    border-color: var(--border-light);
    background: var(--bg-card-hover);
}

.evaluation-grid {
    display: grid;
    grid-template-columns: 180px 1fr 200px;
    gap: 0;
    align-items: stretch;
}

.evaluation-brand {
    padding: 32px 24px;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.brand-logo {
    width: 100%;
    height: auto;
    max-width: 140px;
    opacity: 0.9;
    filter: brightness(0.95);
}

.brand-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.evaluation-summary {
    padding: 32px 40px;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.evaluation-header {
    display: flex;
    align-items: flex-start;
    gap: 40px;
}

.evaluation-score {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.score-value {
    font-size: 36px;
    font-weight: 600;
    color: var(--accent-blue);
    line-height: 1;
}

.score-scale {
    font-size: 18px;
    color: var(--text-muted);
    font-weight: 400;
}

.evaluation-criteria {
    display: flex;
    gap: 32px;
    flex: 1;
}

.criterion {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.criterion-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.criterion-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.evaluation-details {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.evaluation-points {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.evaluation-points li {
    color: var(--text-secondary);
    font-size: 15px;
    padding-left: 20px;
    position: relative;
}

.evaluation-points li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--text-muted);
}

.evaluation-action {
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
    padding: 12px 32px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 2px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
}

.btn-outline:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background: rgba(100, 150, 255, 0.05);
}

.payment-methods {
    width: 100%;
    max-width: 180px;
}

.payment-methods img {
    width: 100%;
    height: auto;
    opacity: 0.7;
}

/* Verification Framework */
.verification-framework {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
}

.framework-content {
    display: grid;
    grid-template-columns: 1fr 240px;
    gap: 80px;
    align-items: start;
}

.framework-intro {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 48px;
    max-width: 90%;
}

.verification-steps {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.verification-step {
    display: flex;
    gap: 24px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border-color);
}

.verification-step:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.step-number {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-blue);
    min-width: 40px;
    font-variant-numeric: tabular-nums;
}

.step-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.step-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.framework-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.diagram-container {
    opacity: 0.4;
}

/* Editorial Positioning */
.editorial-positioning {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
}

.editorial-content {
    max-width: 700px;
    margin: 0 auto;
}

.editorial-text {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 32px;
}

.editorial-text p {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.9;
}

/* Age Section */
.age-section {
    padding: 60px 0;
}

.age-warning {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 2px;
}

.age-warning .section-title {
    margin-bottom: 20px;
    font-size: 24px;
}

.age-text {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
}

/* Contact Section */
.contact-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
}

.contact-header {
    max-width: 700px;
    margin: 0 auto 48px;
    text-align: center;
}

.contact-description {
    color: var(--text-secondary);
    font-size: 17px;
    margin-top: 16px;
    line-height: 1.8;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.form-input,
.form-textarea {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 2px;
    padding: 14px 16px;
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    background: var(--bg-card-hover);
}

.form-textarea {
    resize: vertical;
    min-height: 140px;
    font-family: inherit;
}

.btn-submit {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    padding: 14px 32px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 2px;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    align-self: flex-start;
    margin-top: 8px;
}

.btn-submit:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background: rgba(100, 150, 255, 0.05);
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Footer - Editorial Documentation */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 40px;
    margin-top: 80px;
}

.footer-legal {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
    margin-bottom: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--border-color);
}

.footer-legal-section h3 {
    font-size: 16px;
    margin-bottom: 16px;
    color: var(--text-primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-legal-section p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 12px;
}

.footer-legal-section p:last-child {
    margin-bottom: 0;
}

.footer-references {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-references a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-references a:hover {
    color: var(--accent-blue);
}

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

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-blue);
}

.link-divider {
    color: var(--text-muted);
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 13px;
}

/* Cookie Consent */
.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    padding: 20px;
    z-index: 10000;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.cookie-consent.show {
    transform: translateY(0);
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.cookie-content p {
    color: var(--text-secondary);
    font-size: 14px;
    flex: 1;
}

.btn-cookie-accept {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    padding: 10px 24px;
    font-size: 13px;
    font-weight: 500;
    border-radius: 2px;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-cookie-accept:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background: rgba(100, 150, 255, 0.05);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .hero-illustration {
        order: -1;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .evaluation-grid {
        grid-template-columns: 150px 1fr 180px;
    }
    
    .framework-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .framework-diagram {
        max-width: 300px;
        margin: 0 auto;
    }
    
    .footer-legal {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 32px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .evaluation-grid {
        grid-template-columns: 1fr;
    }
    
    .evaluation-brand,
    .evaluation-summary,
    .evaluation-action {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 24px;
    }
    
    .evaluation-action {
        border-bottom: none;
    }
    
    .evaluation-header {
        flex-direction: column;
        gap: 24px;
    }
    
    .evaluation-criteria {
        width: 100%;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 26px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .evaluation-unit {
        margin-bottom: 20px;
    }
    
    .payment-methods {
        max-width: 100%;
    }
}