:root {
    --color-bg: #07060f;
    --color-surface: rgba(18, 15, 38, 0.7);
    --color-surface-card: #131128;
    --color-surface-hover: #1b1836;
    --color-text: #ffffff;
    --color-muted: #94a3b8;
    --color-primary: #00f2fe;
    --color-secondary: #d946ef;
    --color-accent: #fbbf24;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-glow: rgba(0, 242, 254, 0.3);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --max-width: 1200px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-secondary);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
}

/* Base Layout Structure */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

header {
    background: rgba(7, 6, 15, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 16px 0;
}

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

.logo {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 80px 0 60px 0;
    background: radial-gradient(circle at 80% 20%, rgba(217, 70, 239, 0.15), transparent 50%),
                radial-gradient(circle at 20% 80%, rgba(0, 242, 254, 0.12), transparent 50%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero-content h1 {
    font-size: clamp(32px, 4vw, 48px);
    line-height: 1.15;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 40%, var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--color-muted);
    margin-bottom: 32px;
    max-width: 540px;
}

.cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 40px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(90deg, var(--color-primary), #00d2ff);
    color: #000;
    box-shadow: 0 4px 20px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 242, 254, 0.4);
    color: #000;
}

.btn-secondary {
    border: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.03);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-muted);
}

.trust-badges {
    display: flex;
    gap: 24px;
    border-top: 1px solid var(--color-border);
    padding-top: 24px;
}

.badge-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--color-muted);
}

.badge-icon {
    color: var(--color-accent);
    font-weight: bold;
}

.hero-media img {
    border: 1px solid var(--color-border-glow);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5), 0 0 40px rgba(0, 242, 254, 0.1);
}

/* Two Column Content Grid with Sticky Navigation */
.main-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 48px;
    padding: 60px 0;
}

.sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.toc-card {
    background: var(--color-surface-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 24px;
}

.toc-card h4 {
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-muted);
    margin-bottom: 16px;
}

.toc-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toc-link {
    color: var(--color-muted);
    font-size: 15px;
    display: block;
    padding: 4px 0;
}

.toc-link:hover, .toc-link.active {
    color: var(--color-primary);
    padding-left: 4px;
}

/* Editorial Article Formatting */
article h2 {
    font-size: 28px;
    font-weight: 700;
    margin: 40px 0 20px 0;
    letter-spacing: -0.5px;
}

article h2::after {
    content: '';
    display: block;
    width: 40px;
    height: 3px;
    background: var(--color-primary);
    margin-top: 8px;
    border-radius: 2px;
}

article p {
    color: #cbd5e1;
    font-size: 16px;
    margin-bottom: 24px;
    text-align: justify;
}

/* Aside Warning Box */
aside {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.08), transparent);
    border-left: 4px solid var(--color-accent);
    padding: 24px;
    border-radius: 0 12px 12px 0;
    margin: 32px 0;
}

aside h3 {
    color: var(--color-accent);
    font-size: 18px;
    margin-bottom: 8px;
}

aside p {
    margin-bottom: 0;
    color: #e2e8f0;
}

/* Feature Grid Cards */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin: 32px 0;
}

.feature-card {
    background: var(--color-surface-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 24px;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-secondary);
    box-shadow: 0 10px 30px rgba(217, 70, 239, 0.1);
}

.feature-card .card-num {
    font-size: 32px;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.05);
    line-height: 1;
    margin-bottom: 12px;
}

/* Lists formatting */
article ul, article ol {
    margin: 24px 0;
    padding-left: 20px;
    color: #cbd5e1;
}

article li {
    margin-bottom: 12px;
}

/* Tables Custom Styling */
.table-wrapper {
    overflow-x: auto;
    margin: 32px 0;
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface-card);
    text-align: left;
    font-size: 15px;
}

th, td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
}

th {
    background-color: rgba(255, 255, 255, 0.02);
    font-weight: 600;
    color: var(--color-primary);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: rgba(255,255,255,0.01);
}

/* Inline Embedded Media Adjustments */
.inline-media {
    margin: 40px 0;
}

.inline-media img {
    width: 100%;
    border: 1px solid var(--color-border);
}

/* FAQ Accordion */
.faq-section {
    margin-top: 60px;
}

.faq-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 32px;
}

.faq-item {
    background: var(--color-surface-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-trigger {
    width: 100%;
    background: none;
    border: none;
    padding: 20px 24px;
    text-align: left;
    color: var(--color-text);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-trigger::after {
    content: '+';
    font-size: 20px;
    color: var(--color-primary);
    transition: var(--transition);
}

.faq-item.active .faq-trigger::after {
    content: '−';
    transform: rotate(180deg);
}

.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
    padding: 0 24px;
    color: var(--color-muted);
    font-size: 15px;
}

.faq-item.active .faq-content {
    max-height: 1000px;
    padding-bottom: 20px;
    transition: max-height 0.5s ease-in-out;
}

/* Footer Section */
footer {
    background: #04030a;
    border-top: 1px solid var(--color-border);
    padding: 60px 0 30px 0;
    margin-top: 80px;
    font-size: 14px;
    color: var(--color-muted);
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr repeat(2, 1fr);
    gap: 48px;
    margin-bottom: 40px;
}

.footer-brand p {
    margin-top: 12px;
    max-width: 320px;
}

.footer-links h5 {
    color: var(--color-text);
    font-size: 16px;
    margin-bottom: 16px;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: var(--color-muted);
}

/* Compliance Banner */
.compliance-box {
    background: rgba(217, 70, 239, 0.03);
    border: 1px dashed rgba(217, 70, 239, 0.2);
    padding: 24px;
    border-radius: 8px;
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.age-badge {
    background: var(--color-secondary);
    color: #fff;
    font-weight: 800;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 16px;
}

/* Dismissible Interactive Toast Info */
.interactive-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: #131128;
    border: 1px solid var(--color-primary);
    box-shadow: 0 10px 30px rgba(0, 242, 254, 0.15);
    padding: 20px;
    border-radius: 12px;
    max-width: 320px;
    z-index: 200;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: var(--transition);
}

.interactive-toast h5 {
    font-size: 15px;
    color: var(--color-primary);
}

.interactive-toast p {
    font-size: 13px;
    color: #cbd5e1;
}

.toast-close {
    align-self: flex-end;
    background: none;
    border: none;
    color: var(--color-muted);
    font-size: 12px;
    cursor: pointer;
}

.toast-close:hover {
    color: #fff;
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
    .sidebar {
        display: none; /* Hide TOC card on medium/small devices */
    }
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
    .hero-content h1 {
        margin: 0 auto 20px auto;
    }
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    .cta-group {
        justify-content: center;
    }
    .trust-badges {
        justify-content: center;
    }
}

@media (max-width: 640px) {
    table, thead, tbody, th, td, tr {
        display: block;
    }
    thead tr {
        position: absolute;
        top: -9999px;
        left: -9999px;
    }
    tr {
        border-bottom: 1px solid var(--color-border);
        padding: 16px 0;
    }
    td {
        border: none;
        padding: 8px 24px;
        position: relative;
        text-align: right;
    }
    td::before {
        content: attr(data-label);
        position: absolute;
        left: 24px;
        width: 45%;
        text-align: left;
        font-weight: 600;
        color: var(--color-primary);
    }
    .footer-top {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .interactive-toast {
        left: 24px;
        right: 24px;
        max-width: none;
    }
}