:root {
    --okstl-bg-primary: #0f172a;
    --okstl-bg-secondary: #1e293b;
    --okstl-accent: #d97706;
    --okstl-accent-light: #fcd34d;
    --okstl-text-main: #cbd5e1;
    --okstl-text-title: #f8fafc;
    --okstl-font-head: 'Playfair Display', serif;
    --okstl-font-body: 'Inter', sans-serif;
    --okstl-border: rgba(252, 211, 77, 0.2);
}

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

body.okstl-body-wrap {
    font-family: var(--okstl-font-body);
    background-color: var(--okstl-bg-primary);
    color: var(--okstl-text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Header */
.okstl-main-nav {
    background-color: rgba(15, 23, 42, 0.95);
    border-bottom: 1px solid var(--okstl-border);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.okstl-nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.okstl-brand-mark {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.okstl-logo-abbr {
    font-family: var(--okstl-font-head);
    font-size: 2rem;
    font-weight: 700;
    color: var(--okstl-accent-light);
    letter-spacing: 2px;
}

.okstl-brand-text {
    display: flex;
    flex-direction: column;
}

.okstl-brand-title {
    font-family: var(--okstl-font-head);
    color: var(--okstl-text-title);
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.okstl-brand-sub {
    font-size: 0.8rem;
    color: var(--okstl-accent);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.okstl-age-badge {
    border: 2px solid var(--okstl-accent);
    color: var(--okstl-accent-light);
    font-weight: 700;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 1.1rem;
    letter-spacing: 1px;
}

/* Main Content */
.okstl-content-area {
    padding-top: 80px;
}

/* Hero Section */
.okstl-hero-sec {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
    position: relative;
    padding: 4rem 2rem;
    overflow: hidden;
}

.okstl-hero-sec::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(217, 119, 6, 0.03) 10px, rgba(217, 119, 6, 0.03) 20px);
    z-index: 0;
    animation: okstl-drift 100s linear infinite;
}

@keyframes okstl-drift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.okstl-hero-box {
    max-width: 900px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.okstl-hero-label {
    display: inline-block;
    color: var(--okstl-accent);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--okstl-accent);
    padding-bottom: 0.5rem;
}

.okstl-hero-heading {
    font-family: var(--okstl-font-head);
    font-size: 4.5rem;
    color: var(--okstl-text-title);
    line-height: 1.1;
    margin-bottom: 2rem;
    text-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.okstl-hero-desc {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 4rem;
    color: #94a3b8;
}

.okstl-hero-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.okstl-h-card {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--okstl-border);
    padding: 2rem 1rem;
    border-radius: 12px;
    backdrop-filter: blur(5px);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.okstl-h-card:hover {
    transform: translateY(-5px);
    border-color: var(--okstl-accent-light);
}

.okstl-hc-title {
    display: block;
    color: var(--okstl-accent);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
}

.okstl-hc-val {
    display: block;
    color: var(--okstl-text-title);
    font-size: 1.1rem;
    font-weight: 600;
}

/* Sections Common */
.okstl-resp-sec, .okstl-game-sec {
    padding: 6rem 2rem;
}

.okstl-resp-container, .okstl-game-container {
    max-width: 1200px;
    margin: 0 auto;
}

.okstl-sec-heading {
    font-family: var(--okstl-font-head);
    font-size: 3rem;
    color: var(--okstl-text-title);
    text-align: center;
    margin-bottom: 1.5rem;
}

.okstl-sec-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
    font-size: 1.1rem;
}

/* Light Theme for Responsible Section */
.okstl-resp-sec {
    background-color: #f8fafc;
    color: #334155;
}

.okstl-resp-sec .okstl-sec-heading {
    color: #0f172a;
}

.okstl-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.okstl-info-box {
    background: #ffffff;
    padding: 3rem 2rem;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.05);
    border-top: 4px solid var(--okstl-accent);
    transition: box-shadow 0.3s ease;
}

.okstl-info-box:hover {
    box-shadow: 0 15px 50px rgba(217, 119, 6, 0.15);
}

.okstl-dark-box {
    background: var(--okstl-bg-secondary);
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    border-top: 4px solid var(--okstl-accent-light);
}

.okstl-dark-box:hover {
    box-shadow: 0 15px 50px rgba(252, 211, 77, 0.1);
}

.okstl-box-kicker {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--okstl-accent);
    font-weight: 600;
    display: block;
    margin-bottom: 1rem;
}

.okstl-info-box.okstl-dark-box .okstl-box-kicker {
    color: var(--okstl-accent-light);
}

.okstl-box-title {
    font-family: var(--okstl-font-head);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #0f172a;
}

.okstl-info-box.okstl-dark-box .okstl-box-title {
    color: var(--okstl-text-title);
}

.okstl-box-txt {
    margin-bottom: 2rem;
    color: #64748b;
    font-size: 1rem;
}

.okstl-info-box.okstl-dark-box .okstl-box-txt {
    color: #94a3b8;
}

.okstl-box-list {
    list-style: none;
}

.okstl-box-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    color: #475569;
    font-weight: 500;
}

.okstl-info-box.okstl-dark-box .okstl-box-list li {
    color: #cbd5e1;
}

.okstl-box-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--okstl-accent);
}

.okstl-info-box.okstl-dark-box .okstl-box-list li::before {
    color: var(--okstl-accent-light);
}

/* Specific text colors */
.okstl-light-txt {
    color: var(--okstl-text-title);
}

.okstl-sec-intro.okstl-light-txt {
    color: #94a3b8;
}

/* Footer */
.okstl-page-bottom {
    background-color: #09090b;
    padding: 5rem 2rem 2rem;
    border-top: 1px solid #1f2937;
}

.okstl-footer-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.okstl-footer-slogan {
    font-family: var(--okstl-font-head);
    font-size: 2.5rem;
    color: var(--okstl-text-title);
    text-align: center;
    margin-bottom: 4rem;
}

.okstl-footer-cols {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.okstl-footer-desc p {
    margin-bottom: 1.5rem;
    color: #a1a1aa;
}

.okstl-footer-disclaimer {
    font-weight: 600;
    color: var(--okstl-accent) !important;
}

.okstl-contact-item {
    margin-bottom: 1rem;
    color: #d4d4d8;
}

.okstl-contact-lbl {
    color: var(--okstl-accent-light);
    font-weight: 600;
    margin-right: 0.5rem;
}

.okstl-footer-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 2rem;
}

.okstl-flink {
    color: #a1a1aa;
    text-decoration: none;
    transition: color 0.3s ease;
}

.okstl-flink:hover {
    color: var(--okstl-text-title);
}

.okstl-footer-copyright {
    text-align: center;
    border-top: 1px solid #27272a;
    padding-top: 2rem;
    color: #71717a;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 992px) {
    .okstl-hero-heading { font-size: 3.5rem; }
    .okstl-card-grid { grid-template-columns: 1fr; }
    .okstl-footer-cols { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
    .okstl-nav-inner { flex-direction: column; gap: 1rem; }
    .okstl-hero-grid { grid-template-columns: 1fr; }
    .okstl-hero-heading { font-size: 2.5rem; }
}