:root {
    --st-primary: #6a3de8;
    --st-primary-dark: #5227cf;
    --st-primary-light: #8a65f0;
    --st-primary-subtle: rgba(106, 61, 232, 0.08);
    --st-secondary: #00b8d4;
    --st-accent: #2eca8b;
    --st-white: #ffffff;
    --st-gray-50: #f8fafc;
    --st-gray-100: #f1f5f9;
    --st-gray-200: #e2e8f0;
    --st-gray-300: #cbd5e1;
    --st-gray-400: #94a3b8;
    --st-gray-500: #64748b;
    --st-gray-600: #475569;
    --st-gray-700: #334155;
    --st-gray-800: #1e293b;
    --st-gray-900: #0f172a;
    --st-space-xs: 0.25rem;
    --st-space-sm: 0.5rem;
    --st-space-md: 1rem;
    --st-space-lg: 1.5rem;
    --st-space-xl: 2rem;
    --st-space-2xl: 3rem;
    --st-space-3xl: 4rem;
    --st-radius-sm: 4px;
    --st-radius-md: 8px;
    --st-radius-lg: 12px;
    --st-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --st-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --st-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --st-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.st-page {
    font-family: 'Roboto', sans-serif;
    color: var(--st-gray-700);
    line-height: 1.7;
    background: var(--st-gray-50);
}

.st-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--st-space-lg);
}

.st-page h1,
.st-page h2,
.st-page h3,
.st-page h4 {
    font-weight: 700;
    line-height: 1.3;
    margin-top: 0;
    color: var(--st-gray-800);
}

.st-page h1 {
    font-size: clamp(2rem, 5vw, 2.75rem);
    color: var(--st-white);
}

.st-page h2 {
    font-size: clamp(1.5rem, 3vw, 1.875rem);
    margin-bottom: var(--st-space-lg);
    display: flex;
    align-items: center;
    gap: var(--st-space-sm);
}

.st-page h2 .material-icons {
    color: var(--st-primary);
    font-size: 1.75rem;
}

.st-page h3 {
    font-size: 1.25rem;
    margin-bottom: var(--st-space-md);
}

/* Hero */
.st-hero {
    background: linear-gradient(135deg, var(--st-gray-900) 0%, var(--st-primary-dark) 100%);
    color: var(--st-white);
    padding: var(--st-space-3xl) 0;
    position: relative;
    overflow: hidden;
}

.st-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.st-hero__content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.st-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--st-space-xs);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--st-space-sm) var(--st-space-md);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--st-space-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.st-hero__badge .material-icons {
    font-size: 1rem;
    color: var(--st-accent);
}

.st-hero__subtitle {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--st-space-xl);
}

.st-hero__cta {
    display: flex;
    gap: var(--st-space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Trust Bar */
.st-trust-bar {
    background: linear-gradient(90deg, var(--st-primary), var(--st-primary-light));
    color: var(--st-white);
    padding: var(--st-space-lg) 0;
}

.st-trust-bar__content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--st-space-md);
    text-align: center;
}

.st-trust-bar__content .material-icons {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.st-trust-bar__text {
    margin: 0;
    font-size: 0.95rem;
}

/* Content Grid */
.st-content {
    padding: var(--st-space-3xl) 0;
}

.st-content__grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--st-space-2xl);
}

@media (max-width: 991px) {
    .st-content__grid {
        grid-template-columns: 1fr;
    }
}

/* Sidebar */
.st-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.st-sidebar__nav {
    background: var(--st-white);
    border-radius: var(--st-radius-lg);
    box-shadow: var(--st-shadow-md);
    padding: var(--st-space-lg);
    border-top: 4px solid var(--st-primary);
}

.st-sidebar__header {
    display: flex;
    align-items: center;
    gap: var(--st-space-sm);
    padding-bottom: var(--st-space-md);
    margin-bottom: var(--st-space-md);
    border-bottom: 1px solid var(--st-gray-200);
}

.st-sidebar__header .material-icons {
    color: var(--st-primary);
    font-size: 1.5rem;
}

.st-sidebar__header h2 {
    margin: 0;
    font-size: 1.1rem;
}

.st-sidebar__list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.st-sidebar__item {
    margin-bottom: var(--st-space-xs);
}

.st-sidebar__link {
    display: flex;
    align-items: center;
    gap: var(--st-space-sm);
    padding: var(--st-space-sm) var(--st-space-md);
    color: var(--st-gray-600);
    text-decoration: none;
    border-radius: var(--st-radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--st-transition);
    border-left: 3px solid transparent;
}

.st-sidebar__link .material-icons {
    font-size: 1.1rem;
    color: var(--st-gray-400);
    transition: var(--st-transition);
}

.st-sidebar__link:hover,
.st-sidebar__link.active {
    background: var(--st-primary-subtle);
    color: var(--st-primary);
}

.st-sidebar__link:hover .material-icons,
.st-sidebar__link.active .material-icons {
    color: var(--st-primary);
}

.st-sidebar__link.active {
    border-left-color: var(--st-primary);
    font-weight: 600;
}

/* Mobile TOC */
.st-mobile-toc {
    display: none;
    width: 100%;
    padding: var(--st-space-md);
    background: var(--st-primary);
    color: var(--st-white);
    border: none;
    border-radius: var(--st-radius-md);
    font-weight: 600;
    cursor: pointer;
    margin-bottom: var(--st-space-lg);
    align-items: center;
    justify-content: space-between;
}

.st-mobile-toc .material-icons {
    transition: transform 0.3s ease;
}

.st-mobile-toc.active .material-icons {
    transform: rotate(180deg);
}

@media (max-width: 991px) {
    .st-mobile-toc {
        display: flex;
    }

    .st-sidebar {
        position: static;
        display: none;
    }

    .st-sidebar.visible {
        display: block;
    }
}

/* Sections */
.st-section {
    background: var(--st-white);
    border-radius: var(--st-radius-lg);
    box-shadow: var(--st-shadow-md);
    padding: var(--st-space-2xl);
    margin-bottom: var(--st-space-xl);
    border-top: 4px solid var(--st-primary);
    scroll-margin-top: 100px;
    transition: var(--st-transition);
}

.st-section:hover {
    box-shadow: var(--st-shadow-lg);
}

.st-section__header {
    padding-bottom: var(--st-space-md);
    margin-bottom: var(--st-space-lg);
    border-bottom: 2px solid var(--st-gray-100);
    position: relative;
}

.st-section__header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--st-primary);
}

.st-section__intro {
    background: var(--st-gray-50);
    padding: var(--st-space-lg);
    border-radius: var(--st-radius-md);
    border-left: 4px solid var(--st-primary-light);
    margin-bottom: var(--st-space-xl);
}

.st-section__intro p:last-child {
    margin-bottom: 0;
}

.st-section__conclusion {
    background: var(--st-primary-subtle);
    padding: var(--st-space-lg);
    border-radius: var(--st-radius-md);
    border-left: 4px solid var(--st-primary);
    margin-top: var(--st-space-xl);
}

.st-section__conclusion p:last-child {
    margin-bottom: 0;
}

/* Compliance Badges */
.st-compliance {
    display: flex;
    flex-wrap: wrap;
    gap: var(--st-space-md);
    margin: var(--st-space-lg) 0;
}

.st-compliance__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--st-space-xs);
    background: var(--st-gray-100);
    padding: var(--st-space-sm) var(--st-space-md);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--st-gray-700);
    border: 1px solid var(--st-gray-200);
}

.st-compliance__badge .material-icons {
    font-size: 1rem;
    color: var(--st-accent);
}

/* Stats */
.st-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--st-space-lg);
    margin: var(--st-space-xl) 0;
}

.st-stat {
    text-align: center;
    padding: var(--st-space-lg);
    background: var(--st-white);
    border-radius: var(--st-radius-lg);
    border: 1px solid var(--st-gray-200);
}

.st-stat__number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--st-primary);
    line-height: 1;
    margin-bottom: var(--st-space-sm);
}

.st-stat__label {
    font-size: 0.9rem;
    color: var(--st-gray-600);
    font-weight: 500;
}

/* Features Grid */
.st-features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--st-space-lg);
    margin-bottom: var(--st-space-xl);
}

.st-feature {
    background: var(--st-white);
    border-radius: var(--st-radius-lg);
    padding: var(--st-space-lg);
    box-shadow: var(--st-shadow-sm);
    border: 1px solid var(--st-gray-200);
    transition: var(--st-transition);
    display: flex;
    flex-direction: column;
}

.st-feature:hover {
    transform: translateY(-4px);
    box-shadow: var(--st-shadow-lg);
    border-color: var(--st-primary-light);
}

.st-feature__icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--st-primary-subtle), rgba(106, 61, 232, 0.15));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--st-space-md);
}

.st-feature__icon .material-icons {
    font-size: 1.75rem;
    color: var(--st-primary);
}

.st-feature h3 {
    font-size: 1.125rem;
    margin-bottom: var(--st-space-sm);
}

.st-feature p {
    font-size: 0.95rem;
    color: var(--st-gray-600);
    flex-grow: 1;
    margin-bottom: 0;
}

/* Course Cards */
.st-courses {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--st-space-lg);
    margin-bottom: var(--st-space-xl);
}

.st-course {
    background: var(--st-white);
    border-radius: var(--st-radius-lg);
    overflow: hidden;
    box-shadow: var(--st-shadow-md);
    border: 1px solid var(--st-gray-200);
    transition: var(--st-transition);
    display: flex;
    flex-direction: column;
}

.st-course:hover {
    transform: translateY(-4px);
    box-shadow: var(--st-shadow-lg);
    border-color: var(--st-primary-light);
}

.st-course__content {
    padding: var(--st-space-lg);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.st-course__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--st-space-xs);
    background: var(--st-primary-subtle);
    color: var(--st-primary);
    padding: var(--st-space-xs) var(--st-space-sm);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: var(--st-space-md);
    width: fit-content;
}

.st-course p {
    font-size: 0.95rem;
    color: var(--st-gray-600);
    flex-grow: 1;
}

.st-course__cta {
    display: inline-flex;
    align-items: center;
    gap: var(--st-space-xs);
    background: var(--st-primary);
    color: var(--st-white);
    padding: var(--st-space-sm) var(--st-space-md);
    border-radius: var(--st-radius-md);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--st-transition);
    margin-top: auto;
    width: fit-content;
}

.st-course__cta:hover {
    background: var(--st-primary-dark);
    color: var(--st-white);
    transform: translateY(-2px);
}

.st-course__cta .material-icons {
    font-size: 1rem;
}

/* Process Steps */
.st-process {
    margin-bottom: var(--st-space-xl);
}

.st-process__step {
    display: flex;
    gap: var(--st-space-lg);
    padding: var(--st-space-lg) 0;
    border-bottom: 1px dashed var(--st-gray-200);
}

.st-process__step:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.st-process__icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--st-primary-subtle), rgba(106, 61, 232, 0.15));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.st-process__icon .material-icons {
    font-size: 1.5rem;
    color: var(--st-primary);
}

.st-process__content {
    flex-grow: 1;
}

.st-process__content h3 {
    margin-bottom: var(--st-space-sm);
}

.st-process__content p {
    font-size: 0.95rem;
    color: var(--st-gray-600);
    margin-bottom: 0;
}

@media (max-width: 576px) {
    .st-process__step {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* Options Grid */
.st-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--st-space-lg);
    margin-bottom: var(--st-space-xl);
}

.st-option {
    background: var(--st-white);
    border-radius: var(--st-radius-lg);
    padding: var(--st-space-lg);
    box-shadow: var(--st-shadow-sm);
    border: 1px solid var(--st-gray-200);
    border-top: 3px solid var(--st-primary-light);
    transition: var(--st-transition);
    display: flex;
    flex-direction: column;
}

.st-option:hover {
    transform: translateY(-4px);
    box-shadow: var(--st-shadow-lg);
    background: var(--st-gray-50);
}

.st-option__icon {
    width: 50px;
    height: 50px;
    background: var(--st-primary-subtle);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--st-space-md);
}

.st-option__icon .material-icons {
    font-size: 1.5rem;
    color: var(--st-primary);
}

.st-option h3 {
    font-size: 1.1rem;
    margin-bottom: var(--st-space-sm);
}

.st-option p {
    font-size: 0.9rem;
    color: var(--st-gray-600);
    margin-bottom: 0;
    flex-grow: 1;
}

/* CTA Box */
.st-cta-box {
    background: linear-gradient(135deg, var(--st-primary-subtle), rgba(106, 61, 232, 0.12));
    border-radius: var(--st-radius-lg);
    padding: var(--st-space-xl);
    display: flex;
    align-items: center;
    gap: var(--st-space-lg);
    border: 1px solid rgba(106, 61, 232, 0.2);
}

.st-cta-box--centered {
    flex-direction: column;
    text-align: center;
}

.st-cta-box .material-icons {
    font-size: 3rem;
    color: var(--st-primary);
    flex-shrink: 0;
}

.st-cta-box h3 {
    margin-bottom: var(--st-space-sm);
}

.st-cta-box p {
    color: var(--st-gray-600);
    margin-bottom: var(--st-space-md);
}

.st-cta-box__buttons {
    display: flex;
    gap: var(--st-space-md);
    flex-wrap: wrap;
}

.st-cta-box--centered .st-cta-box__buttons {
    justify-content: center;
}

@media (max-width: 768px) {
    .st-cta-box {
        flex-direction: column;
        text-align: center;
    }

    .st-cta-box__buttons {
        justify-content: center;
    }
}

/* FAQ */
.st-faq {
    margin-bottom: var(--st-space-xl);
}

.st-faq__item {
    border: 1px solid var(--st-gray-200);
    border-radius: var(--st-radius-md);
    margin-bottom: var(--st-space-md);
    overflow: hidden;
    background: var(--st-white);
}

.st-faq__header {
    margin: 0;
}

.st-faq__button {
    width: 100%;
    padding: var(--st-space-md) var(--st-space-lg);
    background: var(--st-white);
    border: none;
    text-align: left;
    font-weight: 600;
    font-size: 1rem;
    color: var(--st-gray-800);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--st-space-md);
    transition: var(--st-transition);
}

.st-faq__button:not(.collapsed) {
    background: var(--st-primary-subtle);
    color: var(--st-primary);
}

.st-faq__button::after {
    content: '';
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%236a3de8'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-size: contain;
    transition: transform 0.2s ease;
}

.st-faq__button.collapsed::after {
    transform: rotate(-90deg);
}

.st-faq__body {
    padding: var(--st-space-lg);
    border-top: 1px solid var(--st-gray-200);
    font-size: 0.95rem;
    color: var(--st-gray-600);
    line-height: 1.7;
}

.st-faq__body ul {
    margin-top: var(--st-space-md);
    margin-bottom: 0;
    padding-left: var(--st-space-xl);
}

.st-faq__body li {
    margin-bottom: var(--st-space-sm);
}

/* Buttons */
.st-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--st-space-sm);
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--st-radius-md);
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--st-transition);
    white-space: nowrap;
}

.st-btn--primary {
    background: var(--st-primary);
    color: var(--st-white);
    border-color: var(--st-primary);
}

.st-btn--primary:hover {
    background: var(--st-primary-dark);
    border-color: var(--st-primary-dark);
    color: var(--st-white);
    transform: translateY(-2px);
    box-shadow: var(--st-shadow-md);
}

.st-btn--outline {
    background: transparent;
    color: var(--st-primary);
    border-color: var(--st-primary);
}

.st-btn--outline:hover {
    background: var(--st-primary);
    color: var(--st-white);
    transform: translateY(-2px);
}

.st-btn--secondary {
    background: var(--st-gray-200);
    color: var(--st-gray-700);
    border-color: var(--st-gray-200);
}

.st-btn--secondary:hover {
    background: var(--st-gray-300);
    border-color: var(--st-gray-300);
}

.st-btn .material-icons {
    font-size: 1.1rem;
}

/* Modal */
.st-modal .modal-content {
    border-radius: var(--st-radius-lg);
    overflow: hidden;
    border: none;
    box-shadow: var(--st-shadow-lg);
}

.st-modal .modal-header {
    background: var(--st-primary);
    color: var(--st-white);
    padding: var(--st-space-lg);
    border-bottom: none;
}

.st-modal .modal-title {
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--st-white);
}

.st-modal .btn-close-white {
    filter: brightness(0) invert(1);
    opacity: 0.8;
}

.st-modal .btn-close-white:hover {
    opacity: 1;
}

.st-modal .modal-body {
    padding: var(--st-space-lg);
}

.st-modal .modal-body h3 {
    color: var(--st-primary-dark);
    margin-bottom: var(--st-space-md);
}

.st-modal .modal-footer {
    padding: var(--st-space-md) var(--st-space-lg);
    background: var(--st-gray-50);
    border-top: 1px solid var(--st-gray-200);
}

/* Utilities */
.st-back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--st-primary);
    color: var(--st-white);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--st-transition);
    z-index: 100;
    box-shadow: var(--st-shadow-lg);
}

.st-back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.st-back-to-top:hover {
    background: var(--st-primary-dark);
    transform: translateY(-3px);
}

.st-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: transparent;
    z-index: 9999;
}

.st-progress__bar {
    height: 100%;
    background: linear-gradient(90deg, var(--st-primary-light), var(--st-primary));
    width: 0%;
    transition: width 0.1s ease;
}

/* Responsive */
@media (max-width: 768px) {
    .st-hero {
        padding: var(--st-space-2xl) 0;
    }

    .st-section {
        padding: var(--st-space-lg);
    }

    .st-features,
    .st-courses,
    .st-options {
        grid-template-columns: 1fr;
    }

    .st-btn {
        width: 100%;
        justify-content: center;
    }

    .st-cta-box__buttons {
        flex-direction: column;
        width: 100%;
    }

    .st-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .st-container {
        padding: 0 var(--st-space-md);
    }

    .st-hero__subtitle {
        font-size: 1rem;
    }

    .st-stats {
        grid-template-columns: 1fr;
    }

    .st-compliance {
        justify-content: center;
    }
}