/* CSS Reset and Base Styles */
:root {
    --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
    --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
    --surface: #FFFFFF;
    --surface-soft: #F8F9FA;
    --text: #141414;
    --muted: #6C757D;
    --border: #E9ECEF;
    --primary: #0057FF;
    --primary-strong: #0043C7;
    --success: #198754;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 18px;
    line-height: 1.7;
    color: var(--text);
    background-color: var(--surface-soft);
}

/* Container and Layout */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 64px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 24px;
    }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
}

h1 {
    font-size: 56px;
}

h2 {
    font-size: 40px;
}

h3 {
    font-size: 24px;
    font-weight: 600;
}

p {
    margin-bottom: 16px;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 1px 0 rgba(20, 20, 20, 0.08);
    backdrop-filter: blur(14px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: #141414;
    text-decoration: none;
}

.logo-text {
    color: #141414;
}

.logo-mark {
    position: relative;
    display: inline-grid;
    place-items: center;
    flex: 0 0 auto;
    width: 38px;
    height: 38px;
    overflow: hidden;
    border: 1px solid rgba(16, 22, 31, 0.1);
    border-radius: 9px;
    background:
        linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(135deg, #10161f 0%, #2457ff 58%, #18714b 100%);
    background-size: 9px 9px, 9px 9px, auto;
    box-shadow: 0 12px 26px rgba(16, 22, 31, 0.18);
    color: #ffffff;
    font-family: 'JetBrains Mono', monospace;
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0;
    transition: transform 160ms var(--ease-out), box-shadow 180ms ease;
}

.logo-mark::before {
    content: "";
    position: absolute;
    inset: 9px 8px 8px;
    border-left: 2px solid rgba(215, 255, 114, 0.86);
    border-bottom: 2px solid rgba(255, 255, 255, 0.86);
    transform: skewX(-18deg);
    opacity: 0.62;
    pointer-events: none;
}

.logo-mark::after {
    content: "";
    position: absolute;
    right: 7px;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #d7ff72;
    box-shadow: -18px 18px 0 rgba(255, 255, 255, 0.82);
    pointer-events: none;
}

.logo-mark-core {
    position: relative;
    z-index: 1;
}

.logo-mark-cursor {
    position: absolute;
    right: 7px;
    bottom: 8px;
    z-index: 1;
    width: 8px;
    height: 3px;
    border-radius: 999px;
    background: #ffffff;
}

.logo-mark-small {
    width: 30px;
    height: 30px;
    border-radius: 7px;
    font-size: 12px;
}

.logo-mark-small::before {
    inset: 8px 7px 7px;
}

.logo-mark-small::after {
    right: 6px;
    top: 6px;
    width: 5px;
    height: 5px;
    box-shadow: -14px 14px 0 rgba(255, 255, 255, 0.82);
}

.logo-mark-small .logo-mark-cursor {
    right: 6px;
    bottom: 6px;
    width: 6px;
}

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

.site-search {
    position: relative;
    flex: 1 1 360px;
    max-width: 430px;
    margin: 0 28px;
}

.site-search-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

.site-search-control {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 42px;
    padding: 0 14px;
    border: 1px solid rgba(20, 20, 20, 0.12);
    border-radius: 999px;
    background: rgba(248, 249, 250, 0.86);
    color: #5f6670;
    transition: border-color 160ms ease, background-color 160ms ease, box-shadow 180ms ease;
}

.site-search-control:focus-within {
    border-color: rgba(0, 87, 255, 0.48);
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(0, 87, 255, 0.1);
}

.site-search-control svg {
    flex: 0 0 auto;
    width: 18px;
    height: 18px;
}

.site-search-control input {
    min-width: 0;
    width: 100%;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--text);
    font: inherit;
    font-size: 14px;
    line-height: 1;
}

.site-search-control input::placeholder {
    color: #777f8c;
}

.site-search-results {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    z-index: 120;
    display: none;
    overflow: hidden;
    border: 1px solid rgba(20, 20, 20, 0.1);
    border-radius: 14px;
    background: #ffffff;
    box-shadow: 0 24px 70px rgba(16, 22, 31, 0.18);
}

.site-search-results.is-open {
    display: block;
}

.site-search-result {
    display: grid;
    gap: 2px;
    padding: 14px 16px;
    color: var(--text);
    text-decoration: none;
    border-bottom: 1px solid rgba(20, 20, 20, 0.07);
}

.site-search-result:last-child {
    border-bottom: 0;
}

.site-search-result:hover,
.site-search-result:focus-visible {
    background: #f4f7ff;
    outline: 0;
}

.site-search-result span {
    color: var(--primary);
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.site-search-result strong {
    font-size: 15px;
    line-height: 1.25;
}

.site-search-result small {
    display: -webkit-box;
    overflow: hidden;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.35;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.site-search-empty {
    padding: 16px;
    color: var(--muted);
    font-size: 14px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    background: none;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    cursor: pointer;
    transition: transform 140ms var(--ease-out), background-color 160ms ease, border-color 160ms ease;
}

.menu-toggle:focus-visible {
    outline: 3px solid rgba(0, 87, 255, 0.35);
    outline-offset: 2px;
}

.menu-toggle:active {
    transform: scale(0.97);
}

@media (hover: hover) and (pointer: fine) {
    .menu-toggle:hover {
        background: rgba(0, 87, 255, 0.08);
        border-color: rgba(0, 87, 255, 0.35);
    }
}

.menu-bar {
    height: 2px;
    width: 20px;
    background: #141414;
    border-radius: 999px;
    margin: 0 auto;
    transition: transform 180ms var(--ease-out), opacity 140ms ease;
}

.menu-toggle[aria-expanded="true"] .menu-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.nav-link {
    color: #6C757D;
    text-decoration: none;
    font-weight: 500;
    transition: color 160ms ease;
}

@media (hover: hover) and (pointer: fine) {
    .nav-link:hover {
        color: #0057FF;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        display: flex;
        position: absolute;
        top: calc(100% + 16px);
        right: 0;
        left: 0;
        flex-direction: column;
        gap: 16px;
        background: #FFFFFF;
        padding: 24px 24px 32px;
        border-radius: 12px;
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
        border: 1px solid rgba(0, 0, 0, 0.05);
        opacity: 0;
        pointer-events: none;
        transform: translateY(-4px) scale(0.98);
        transform-origin: top right;
        transition: opacity 170ms ease, transform 170ms var(--ease-out);
    }

    .nav-links.open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0) scale(1);
    }

    .nav-link {
        font-size: 18px;
        padding: 8px 0;
    }
}

/* Hero Section */
.hero {
    background: #F8F9FA;
    padding: 96px 0;
    text-align: center;
    min-height: 520px;
    display: flex;
    align-items: center;
}

.hero-title {
    color: #141414;
    margin-bottom: 24px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    color: #6C757D;
    font-size: 20px;
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Buttons */
.cta-button,
.enroll-button,
.submit-button {
    background: #0057FF;
    color: #FFFFFF;
    border: none;
    padding: 16px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 150ms var(--ease-out), background-color 160ms ease, box-shadow 160ms ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    box-shadow: 0 8px 18px rgba(0, 87, 255, 0.18);
}

@media (hover: hover) and (pointer: fine) {
    .cta-button:hover,
    .enroll-button:hover,
    .submit-button:hover {
        background: #0043C7;
        transform: translateY(-1px);
        box-shadow: 0 12px 26px rgba(0, 87, 255, 0.22);
    }
}

.cta-button:active,
.enroll-button:active,
.submit-button:active {
    background: #0043C7;
    transform: scale(0.97);
    box-shadow: 0 6px 14px rgba(0, 87, 255, 0.18);
}

.enroll-button-small {
    padding: 12px 24px;
    border-radius: 6px;
}

.enroll-button-success {
    background: #198754;
    box-shadow: 0 8px 18px rgba(25, 135, 84, 0.18);
}

@media (hover: hover) and (pointer: fine) {
    .enroll-button-success:hover {
        background: #157347;
        box-shadow: 0 12px 26px rgba(25, 135, 84, 0.22);
    }
}

.enroll-button-success:active {
    background: #157347;
    box-shadow: 0 6px 14px rgba(25, 135, 84, 0.18);
}

/* Sections */
.section {
    padding: 96px 0;
}

.section-title {
    text-align: center;
    color: #141414;
    margin-bottom: 64px;
}

/* Course Cards */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 48px;
    max-width: 1200px;
    margin: 0 auto;
}

.course-card {
    background: #FFFFFF;
    border-radius: 12px;
    padding: 0;
    border: 1px solid rgba(0, 87, 255, 0.08);
    box-shadow: 0 8px 22px rgba(0, 87, 255, 0.08);
    transition: transform 190ms var(--ease-out), box-shadow 190ms ease, border-color 190ms ease;
    overflow: hidden;
}

@media (hover: hover) and (pointer: fine) {
    .course-card:hover {
        transform: translateY(-4px);
        border-color: rgba(0, 87, 255, 0.18);
        box-shadow: 0 16px 34px rgba(0, 87, 255, 0.13);
    }
}

.course-image {
    width: 100%;
    height: 200px;
}

.course-content {
    padding: 32px;
}

.course-title {
    color: #141414;
    margin-bottom: 16px;
}

.course-description {
    color: #6C757D;
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 24px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-details {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.course-duration,
.course-level {
    background: #EBF2FF;
    color: #0057FF;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
}

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

.course-note {
    font-size: 20px;
    font-weight: 600;
    color: #141414;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.feature h3 {
    margin-bottom: 8px;
    color: #141414;
}

.feature p {
    color: #6C757D;
    font-size: 16px;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.stat {
    text-align: center;
    padding: 24px;
    background: #FFFFFF;
    border-radius: 12px;
    border: 1px solid rgba(0, 87, 255, 0.08);
    box-shadow: 0 8px 22px rgba(0, 87, 255, 0.08);
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: #0057FF;
    margin-bottom: 8px;
}

.stat-label {
    color: #6C757D;
    font-size: 14px;
    font-weight: 500;
}

@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .about-stats {
        flex-direction: row;
        gap: 16px;
    }
}

@media (max-width: 768px) {
    .courses-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .about-stats {
        flex-direction: column;
    }
    
    h1 {
        font-size: 40px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .section-title {
        font-size: 32px;
    }
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h3 {
    color: #141414;
    margin-bottom: 16px;
}

.contact-info p {
    color: #6C757D;
    margin-bottom: 32px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #6C757D;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    position: relative;
}

.form-input {
    width: 100%;
    height: 56px;
    padding: 0 16px;
    border: 1px solid #E9ECEF;
    border-radius: 8px;
    background: #FFFFFF;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.form-input:focus {
    outline: none;
    border: 2px solid #0057FF;
    box-shadow: 0 0 0 3px rgba(0, 87, 255, 0.1);
}

.form-textarea {
    height: auto;
    padding: 16px;
    resize: vertical;
    min-height: 120px;
}

.submit-button {
    width: 100%;
}

@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 180ms ease;
}

.modal.is-open {
    display: flex;
    opacity: 1;

    @starting-style {
        opacity: 0;
    }
}

.modal-content {
    background: #FFFFFF;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.97);
    transition: transform 210ms var(--ease-out);
}

.modal.is-open .modal-content {
    transform: scale(1);

    @starting-style {
        transform: scale(0.97);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid #E9ECEF;
}

.modal-header h3 {
    margin: 0;
    color: #141414;
}

.close-button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: #6C757D;
    transition: transform 140ms var(--ease-out), color 160ms ease;
}

.close-button:active {
    transform: scale(0.94);
}

@media (hover: hover) and (pointer: fine) {
    .close-button:hover {
        color: #141414;
    }
}

.modal-body {
    padding: 24px;
}

.course-summary {
    text-align: center;
    margin-bottom: 24px;
    padding: 16px;
    background: #EBF2FF;
    border-radius: 8px;
}

.course-summary h4 {
    color: #0057FF;
    margin-bottom: 8px;
}

.course-summary p {
    font-size: 24px;
    font-weight: 700;
    color: #141414;
    margin: 0;
}

.order-total {
    text-align: center;
    font-size: 18px;
    margin: 24px 0;
    color: #141414;
}

/* Success Message */
.success-message {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1001;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 180ms ease;
}

.success-message.is-open {
    display: flex;
    opacity: 1;

    @starting-style {
        opacity: 0;
    }
}

.success-content {
    background: #FFFFFF;
    border-radius: 12px;
    padding: 48px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    transform: scale(0.96);
    transition: transform 210ms var(--ease-out);
}

.success-message.is-open .success-content {
    transform: scale(1);

    @starting-style {
        transform: scale(0.96);
    }
}

.success-content svg {
    margin-bottom: 24px;
}

.success-content h3 {
    color: #198754;
    margin-bottom: 16px;
}

.success-content p {
    color: #6C757D;
    margin-bottom: 32px;
}

.success-button {
    background: #198754;
    color: #FFFFFF;
    border: none;
    padding: 16px 32px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 150ms var(--ease-out), background-color 160ms ease, box-shadow 160ms ease;
    box-shadow: 0 8px 18px rgba(25, 135, 84, 0.18);
}

.success-button:active {
    transform: scale(0.97);
}

@media (hover: hover) and (pointer: fine) {
    .success-button:hover {
        background: #157347;
        transform: translateY(-1px);
        box-shadow: 0 12px 26px rgba(25, 135, 84, 0.22);
    }
}

/* Footer */
.footer {
    background: #141414;
    color: #FFFFFF;
    padding: 64px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: minmax(220px, 1.35fr) repeat(4, minmax(140px, 1fr));
    gap: 30px;
    margin-bottom: 48px;
}

.footer-info {
    min-width: 240px;
}

.footer-info .logo {
    color: #FFFFFF;
    margin-bottom: 16px;
}

.footer-info p {
    color: #6C757D;
}

.footer-links h4 {
    color: #FFFFFF;
    margin-bottom: 16px;
    font-size: 18px;
}

.footer-links a,
.footer-links span {
    display: block;
    color: #6C757D;
    text-decoration: none;
    margin-bottom: 8px;
    transition: color 200ms ease;
}

.footer-links a:hover {
    color: #0057FF;
}

.footer-link-muted {
    font-size: 14px;
    line-height: 1.45;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #333;
}

.footer-socials {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 14px;
}

.footer-social-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #ffffff;
    font-weight: 700;
    text-decoration: none;
    transition: color 200ms ease, transform 200ms ease;
}

.footer-social-link:hover {
    color: #ff4d4d;
    transform: translateY(-1px);
}

.footer-social-link svg {
    width: 22px;
    height: 22px;
    color: #ff0000;
    flex: 0 0 auto;
}

.footer-bottom p {
    color: #6C757D;
    margin: 0;
}

@media (max-width: 1100px) {
    .footer-content {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .footer-info {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 120ms !important;
        transition-property: opacity, color, background-color, border-color, box-shadow !important;
    }
    
    html {
        scroll-behavior: auto;
    }

    .nav-links,
    .modal-content,
    .success-content,
    .scroll-to-top,
    .reveal-on-scroll,
    .course-card,
    .curriculum-week,
    .addon-card {
        transform: none !important;
    }
}

/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.scroll-to-top {
    position: fixed;
    right: 32px;
    bottom: 32px;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border: none;
    border-radius: 50%;
    color: #FFFFFF;
    background: #0057FF;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px) scale(0.96);
    box-shadow: 0 10px 24px rgba(0, 87, 255, 0.25);
    transition: opacity 170ms ease, transform 170ms var(--ease-out), box-shadow 170ms ease, background-color 170ms ease;
}

.whatsapp-float {
    position: fixed;
    right: 32px;
    bottom: 96px;
    z-index: 1000;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 18px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    background: #18714b;
    color: #ffffff;
    font-size: 15px;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 14px 30px rgba(24, 113, 75, 0.25);
    transition: transform 150ms var(--ease-out), background-color 160ms ease, box-shadow 160ms ease;
}

.whatsapp-float:active {
    transform: scale(0.97);
}

.consent-banner {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 1200;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 18px;
    width: min(640px, calc(100vw - 48px));
    padding: 18px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    background: var(--ink);
    color: #ffffff;
    box-shadow: 0 24px 70px rgba(16, 22, 31, 0.24);
}

.consent-copy {
    display: grid;
    gap: 4px;
}

.consent-copy strong {
    font-size: 16px;
}

.consent-copy span {
    color: rgba(255, 255, 255, 0.72);
    font-size: 14px;
    line-height: 1.45;
}

.consent-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.consent-button {
    min-height: 42px;
    padding: 0 16px;
    border: 1px solid #ffffff;
    border-radius: 999px;
    background: #ffffff;
    color: var(--ink);
    font: inherit;
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    transition: transform 150ms var(--ease-out), background-color 160ms ease, color 160ms ease;
}

.consent-button-secondary {
    background: transparent;
    color: #ffffff;
}

.consent-button:active {
    transform: scale(0.97);
}

@media (hover: hover) and (pointer: fine) {
    .whatsapp-float:hover {
        background: #125c3d;
        transform: translateY(-1px);
        box-shadow: 0 18px 36px rgba(24, 113, 75, 0.3);
    }
}

.scroll-to-top.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
}

.scroll-to-top:active {
    transform: scale(0.94);
}

@media (hover: hover) and (pointer: fine) {
    .scroll-to-top:hover {
        background: #0043C7;
        transform: translateY(-2px) scale(1);
        box-shadow: 0 14px 30px rgba(0, 87, 255, 0.32);
    }
}

.reveal-on-scroll {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 260ms ease, transform 260ms var(--ease-out);
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-on-scroll:nth-child(2) {
    transition-delay: 40ms;
}

.reveal-on-scroll:nth-child(3) {
    transition-delay: 80ms;
}

.reveal-on-scroll:nth-child(4) {
    transition-delay: 120ms;
}

/* Form Validation Styles */
.form-input.error {
    border-color: #DC3545;
}

.form-input.success {
    border-color: #198754;
}

.error-message {
    color: #DC3545;
    font-size: 14px;
    margin-top: 4px;
    display: none;
}

.error-message.show {
    display: block;
}

.addon-selection.error {
    outline: 2px solid rgba(220, 53, 69, 0.3);
    outline-offset: 6px;
    border-radius: 12px;
}

.addon-selection .error-message {
    margin-top: 12px;
}

.bank-transfer-info {
    margin: 24px 0;
    padding: 24px;
    background: #F8F9FA;
    border-radius: 12px;
    border: 1px solid #E9ECEF;
}

.bank-transfer-info h4 {
    color: #141414;
    margin-bottom: 16px;
    font-size: 18px;
}

.bank-details {
    color: #141414;
    line-height: 1.6;
}

.bank-details p {
    margin-bottom: 8px;
    font-size: 16px;
}

.bank-details p:last-child {
    margin-bottom: 0;
    font-style: italic;
    color: #6C757D;
}

.bank-details strong {
    color: #141414;
}

/* Form Label Styles */
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #141414;
    font-size: 16px;
}

/* Mobile Responsiveness for forms */
@media (max-width: 768px) {
    .bank-transfer-info {
        margin: 16px 0;
        padding: 16px;
    }
}

/* Course Hero Section */
.course-hero {
    background: linear-gradient(135deg, #0057FF 0%, #0043C7 100%);
    color: #FFFFFF;
    padding: 80px 0;
    text-align: center;
    position: relative;
}

.devops-hero {
    background: linear-gradient(135deg, #198754 0%, #146c43 100%);
}

.course-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 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' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
    pointer-events: none;
}

.course-hero-content {
    position: relative;
    z-index: 2;
}

.breadcrumb {
    font-size: 14px;
    margin-bottom: 24px;
    opacity: 0.8;
}

.breadcrumb a {
    color: #FFFFFF;
    text-decoration: none;
    transition: opacity 200ms ease;
}

.breadcrumb a:hover {
    opacity: 0.7;
}

.course-hero-title {
    color: #FFFFFF;
    margin-bottom: 24px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.course-hero-subtitle {
    font-size: 20px;
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
    line-height: 1.5;
}

.course-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 24px;
    max-width: 800px;
    margin: 0 auto 48px;
    padding: 0 24px;
}

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

.meta-label {
    font-size: 14px;
    opacity: 0.8;
    font-weight: 500;
}

.meta-value {
    font-size: 18px;
    font-weight: 600;
}

.course-hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.secondary-button {
    background: transparent;
    color: #FFFFFF;
    border: 2px solid #FFFFFF;
    padding: 16px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: transform 150ms var(--ease-out), background-color 160ms ease, color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.secondary-button:active {
    transform: scale(0.97);
}

@media (hover: hover) and (pointer: fine) {
    .secondary-button:hover {
        background: #FFFFFF;
        color: #0057FF;
        transform: translateY(-1px);
    }
}

/* Course Overview */
.overview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.overview-text h2 {
    text-align: left;
    margin-bottom: 24px;
}

.overview-text p {
    font-size: 18px;
    line-height: 1.7;
    color: #6C757D;
    margin-bottom: 32px;
}

.overview-highlights {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.highlight {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.highlight h3 {
    margin-bottom: 8px;
    color: #141414;
}

.highlight p {
    color: #6C757D;
    font-size: 16px;
    margin-bottom: 0;
}

.overview-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

/* Curriculum Section */
.curriculum-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.curriculum-week {
    background: #FFFFFF;
    padding: 32px;
    border-radius: 12px;
    border: 1px solid rgba(20, 20, 20, 0.06);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.05);
    transition: transform 190ms var(--ease-out), box-shadow 190ms ease, border-color 190ms ease;
}

@media (hover: hover) and (pointer: fine) {
    .curriculum-week:hover {
        transform: translateY(-3px);
        border-color: rgba(0, 87, 255, 0.16);
        box-shadow: 0 14px 30px rgba(0, 0, 0, 0.08);
    }
}

.week-header {
    margin-bottom: 24px;
}

.week-number {
    display: inline-block;
    background: #0057FF;
    color: #FFFFFF;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.week-header h3 {
    color: #141414;
    margin-bottom: 0;
}

.week-topics {
    list-style: none;
    padding: 0;
}

.week-topics li {
    color: #6C757D;
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
}

.week-topics li::before {
    content: '•';
    color: #0057FF;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Add-ons Section */
.free-addons {
    background: #FFFFFF;
}

.section-subtitle {
    text-align: center;
    color: #6C757D;
    font-size: 18px;
    margin-bottom: 48px;
}

.addons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}

.addon-card {
    background: #F8F9FA;
    border: 2px solid #E9ECEF;
    border-radius: 12px;
    padding: 32px;
    transition: transform 190ms var(--ease-out), box-shadow 190ms ease, border-color 190ms ease;
}

@media (hover: hover) and (pointer: fine) {
    .addon-card:hover {
        border-color: #0057FF;
        transform: translateY(-3px);
        box-shadow: 0 14px 30px rgba(0, 87, 255, 0.1);
    }
}

.addon-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.addon-header h3 {
    color: #141414;
    margin-bottom: 0;
}

.addon-content p {
    color: #6C757D;
    font-size: 16px;
    margin-bottom: 24px;
    line-height: 1.6;
}

.addon-features {
    list-style: none;
    padding: 0;
}

.addon-features li {
    color: #141414;
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}

.addon-features li::before {
    content: '✓';
    color: #198754;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Enrollment Section */
.enrollment-section {
    background: #F8F9FA;
}

.enrollment-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    max-width: 1200px;
    margin: 0 auto;
}

.enrollment-info h3 {
    color: #141414;
    margin-bottom: 24px;
}

.benefits-list {
    list-style: none;
    padding: 0;
}

.benefits-list li {
    color: #6C757D;
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 12px;
    padding-left: 24px;
    position: relative;
}

.benefits-list li::before {
    content: '✓';
    color: #198754;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.enrollment-card {
    background: #FFFFFF;
    border-radius: 12px;
    padding: 32px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border: 1px solid #E9ECEF;
}

.enrollment-header {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid #E9ECEF;
}

.enrollment-header h3 {
    color: #141414;
    margin-bottom: 16px;
}

/* Addon Selection */
.addon-selection {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
}

.addon-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border: 2px solid #E9ECEF;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 140ms var(--ease-out), border-color 160ms ease, background-color 160ms ease;
    background: #FFFFFF;
}

.addon-option:active {
    transform: scale(0.98);
}

@media (hover: hover) and (pointer: fine) {
    .addon-option:hover {
        border-color: #198754;
        background: #D1E7DD;
    }
}

.addon-option input[type="radio"] {
    margin: 0;
    width: 18px;
    height: 18px;
    accent-color: #198754;
}

.addon-option input[type="radio"]:checked + .addon-label {
    color: #198754;
    font-weight: 600;
}

.addon-option input[type="radio"]:checked ~ .addon-option {
    border-color: #198754;
    background: #D1E7DD;
}

.addon-label {
    color: #141414;
    font-size: 16px;
}

.enrollment-total {
    text-align: center;
    margin: 24px 0;
    padding: 16px;
    background: #F8F9FA;
    border-radius: 8px;
    border: 1px solid #E9ECEF;
}

.enrollment-total span {
    display: block;
    color: #141414;
    font-size: 20px;
    font-weight: 600;
}

.enrollment-total small {
    color: #6C757D;
    font-size: 14px;
    margin-top: 4px;
    display: block;
}

/* Mobile Responsive Styles for Course Pages */
@media (max-width: 1024px) {
    .overview-content,
    .enrollment-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .course-meta {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .course-hero {
        padding: 60px 0;
    }
    
    .course-hero-title {
        font-size: 36px;
    }
    
    .course-hero-subtitle {
        font-size: 18px;
    }
    
    .course-meta {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .course-hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-button,
    .secondary-button {
        width: 100%;
        max-width: 280px;
    }
    
    .curriculum-grid,
    .addons-grid {
        grid-template-columns: 1fr;
    }
    
    .overview-content,
    .enrollment-content {
        gap: 32px;
    }
    
    .enrollment-card {
        padding: 24px;
    }
}

/* Simple engineering lab direction */
:root {
    --surface: #fffdf7;
    --surface-soft: #f3f6ed;
    --surface-card: #ffffff;
    --ink: #10161f;
    --text: #17202c;
    --muted: #687386;
    --line: #dce4d3;
    --line-strong: #b8c2ad;
    --primary: #2457ff;
    --primary-strong: #123bd8;
    --success: #18714b;
    --code: #111827;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text);
    background:
        linear-gradient(rgba(16, 22, 31, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(16, 22, 31, 0.035) 1px, transparent 1px),
        var(--surface);
    background-size: 28px 28px;
}

.container {
    max-width: 1180px;
}

h1,
h2,
h3,
.logo {
    letter-spacing: 0;
}

h1 {
    font-size: clamp(44px, 7vw, 82px);
    line-height: 0.96;
    font-weight: 800;
}

h2 {
    font-size: clamp(32px, 4vw, 52px);
    line-height: 1.02;
    font-weight: 800;
}

h3 {
    font-weight: 700;
}

p {
    color: var(--muted);
}

.navbar {
    background: rgba(255, 253, 247, 0.9);
    border-bottom: 1px solid rgba(16, 22, 31, 0.08);
    box-shadow: none;
}

.nav-content {
    height: 72px;
}

.logo {
    color: var(--ink);
    font-size: 22px;
}

@media (hover: hover) and (pointer: fine) {
    .logo:hover .logo-mark {
        transform: translateY(-1px) rotate(-2deg);
        box-shadow: 0 18px 34px rgba(16, 22, 31, 0.22);
    }
}

.nav-links {
    gap: 10px;
}

.nav-link {
    padding: 9px 12px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 15px;
    font-weight: 600;
}

@media (hover: hover) and (pointer: fine) {
    .nav-link:hover {
        color: var(--ink);
        background: rgba(36, 87, 255, 0.08);
    }
}

.hero {
    min-height: calc(100dvh - 72px);
    padding: 72px 0 56px;
    text-align: left;
    background: transparent;
}

.hero-content {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.82fr);
    gap: clamp(36px, 7vw, 88px);
    align-items: center;
}

.hero-copy {
    max-width: 720px;
}

.hero-kicker {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    margin-bottom: 22px;
    padding: 8px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    color: var(--primary-strong);
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 600;
}

.hero-title {
    max-width: 760px;
    margin: 0 0 24px;
    color: var(--ink);
}

.hero-subtitle {
    max-width: 560px;
    margin: 0 0 32px;
    color: var(--muted);
    font-size: clamp(18px, 2vw, 22px);
    line-height: 1.45;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.cta-button,
.enroll-button,
.submit-button,
.success-button {
    border-radius: 999px;
    background: var(--ink);
    box-shadow: 0 14px 28px rgba(16, 22, 31, 0.16);
}

@media (hover: hover) and (pointer: fine) {
    .cta-button:hover,
    .enroll-button:hover,
    .submit-button:hover {
        background: var(--primary);
        box-shadow: 0 16px 32px rgba(36, 87, 255, 0.22);
    }
}

.ghost-button,
.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 54px;
    padding: 14px 22px;
    border: 1px solid rgba(16, 22, 31, 0.16);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.7);
    color: var(--ink);
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    transition: transform 150ms var(--ease-out), background-color 160ms ease, border-color 160ms ease;
}

.ghost-button:active,
.secondary-button:active {
    transform: scale(0.97);
}

@media (hover: hover) and (pointer: fine) {
    .ghost-button:hover,
    .secondary-button:hover,
    .secondary-button-light:hover {
        background: var(--ink);
        border-color: var(--ink);
        color: #ffffff;
        transform: translateY(-1px);
    }
}

.secondary-button-light {
    color: var(--ink);
    border-color: rgba(16, 22, 31, 0.16);
}

.hero-lab {
    position: relative;
}

.lab-window,
.lab-note,
.course-card,
.stat,
.curriculum-week,
.addon-card,
.enrollment-card,
.contact-form,
.bank-transfer-info {
    border-radius: 8px;
}

.lab-window {
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: var(--code);
    box-shadow: 0 28px 70px rgba(16, 22, 31, 0.22);
}

.lab-topbar {
    display: flex;
    gap: 8px;
    padding: 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.04);
}

.lab-topbar span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #d7ded0;
}

.lab-lines {
    padding: 28px;
    font-family: 'JetBrains Mono', monospace;
    font-size: clamp(13px, 1.45vw, 16px);
    line-height: 1.9;
}

.lab-lines p {
    margin: 0;
    color: #f8fafc;
}

.lab-lines span {
    color: #8bb5ff;
}

.lab-lines .line-dim {
    color: #9ca3af;
}

.lab-lines .line-good {
    color: #86efac;
}

.lab-note {
    position: absolute;
    right: -20px;
    bottom: -28px;
    max-width: 230px;
    padding: 18px;
    border: 1px solid var(--line);
    background: rgba(255, 253, 247, 0.94);
    box-shadow: 0 18px 40px rgba(16, 22, 31, 0.12);
}

.lab-note strong,
.lab-note span {
    display: block;
}

.lab-note strong {
    color: var(--ink);
}

.lab-note span {
    margin-top: 4px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.35;
}

.section {
    padding: clamp(72px, 9vw, 116px) 0;
}

.section-title {
    max-width: 780px;
    margin: 0 auto 48px;
    color: var(--ink);
}

.section-lead {
    max-width: 650px;
    margin-bottom: 32px;
    color: var(--muted);
}

.section-plain {
    background: rgba(255, 255, 255, 0.54);
}

.narrow-center {
    max-width: 760px;
    text-align: center;
}

.narrow-center .section-title,
.narrow-center .section-lead {
    margin-left: auto;
    margin-right: auto;
}

.profile-hero .profile-kicker {
    margin-bottom: 16px;
    border-color: rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
}

.profile-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
    gap: clamp(28px, 5vw, 64px);
    align-items: start;
}

.profile-main {
    max-width: 760px;
}

.profile-main h2,
.profile-panel h2,
.profile-strip h2 {
    margin: 0 0 18px;
    color: var(--ink);
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1.04;
}

.profile-main p {
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 18px;
    line-height: 1.72;
}

.profile-panel {
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface-card);
}

.profile-panel h2 {
    font-size: 24px;
}

.profile-panel dl {
    margin: 0;
}

.profile-panel div {
    padding: 16px 0;
    border-top: 1px solid var(--line);
}

.profile-panel dt {
    margin-bottom: 5px;
    color: var(--muted);
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.profile-panel dd {
    margin: 0;
    color: var(--ink);
    font-weight: 700;
    line-height: 1.45;
}

.profile-panel a {
    color: var(--primary-strong);
}

.profile-strip {
    display: grid;
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1fr);
    gap: clamp(28px, 5vw, 64px);
    align-items: start;
}

.profile-strip h2 {
    max-width: 620px;
}

.profile-skills,
.profile-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.profile-skills span,
.profile-links a {
    display: inline-flex;
    align-items: center;
    min-height: 42px;
    padding: 10px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.68);
    color: var(--ink);
    font-weight: 700;
}

.profile-links a {
    text-decoration: none;
}

.profile-actions-center {
    justify-content: center;
}

.hire-hero .course-hero-content {
    max-width: 920px;
}

.hire-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1fr);
    gap: clamp(28px, 6vw, 72px);
    align-items: start;
}

.hire-copy h2 {
    margin: 0 0 22px;
    color: var(--ink);
    font-size: clamp(34px, 4.6vw, 58px);
    line-height: 1;
}

.hire-copy p {
    max-width: 620px;
    font-size: 18px;
    line-height: 1.68;
}

.hire-services,
.marketplace-grid {
    display: grid;
    gap: 14px;
}

.hire-service,
.marketplace-tile {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.74);
    transition: transform 170ms var(--ease-out), border-color 170ms ease, background-color 170ms ease;
}

.hire-service {
    padding: 24px;
}

.hire-service span,
.marketplace-tile span {
    display: inline-flex;
    margin-bottom: 14px;
    color: var(--primary-strong);
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.hire-service h3,
.marketplace-tile strong {
    display: block;
    margin: 0 0 10px;
    color: var(--ink);
}

.hire-service p,
.marketplace-tile p {
    margin: 0;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.55;
}

.marketplace-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.marketplace-tile {
    min-height: 180px;
    padding: 22px;
    color: inherit;
    text-decoration: none;
}

@media (hover: hover) and (pointer: fine) {
    .hire-service:hover,
    .marketplace-tile:hover {
        transform: translateY(-2px);
        border-color: rgba(36, 87, 255, 0.24);
        background: #ffffff;
    }
}

.about-features-spaced,
.partnership-card {
    margin-top: 32px;
}

.support-grid {
    display: grid;
    grid-template-columns: 1.12fr 0.94fr 0.94fr;
    gap: 16px;
    align-items: stretch;
}

.support-grid-two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 900px;
    margin: 0 auto;
}

.support-card {
    display: flex;
    min-height: 360px;
    flex-direction: column;
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.74);
    color: var(--ink);
    text-decoration: none;
    transition: transform 170ms var(--ease-out), border-color 170ms ease, background-color 170ms ease;
}

.support-card-featured {
    background: var(--ink);
    color: #ffffff;
}

.support-index {
    width: fit-content;
    margin-bottom: 26px;
    padding: 7px 10px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--primary-strong);
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.support-card-featured .support-index {
    border-color: rgba(255, 255, 255, 0.18);
    color: #d7ff72;
}

.support-card h3 {
    max-width: 420px;
    margin: 0 0 18px;
    color: inherit;
    font-size: clamp(24px, 3vw, 34px);
    line-height: 1.05;
}

.support-card p {
    color: var(--muted);
    font-size: 17px;
    line-height: 1.55;
}

.support-card-featured p {
    color: rgba(255, 255, 255, 0.72);
}

.support-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
    padding-top: 26px;
}

.support-meta span {
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

.support-card-featured .support-meta span {
    border-color: rgba(255, 255, 255, 0.16);
    color: rgba(255, 255, 255, 0.78);
}

.support-card strong {
    display: inline-flex;
    margin-top: 20px;
    color: var(--ink);
}

.support-card-featured strong {
    color: #ffffff;
}

.overview-console {
    min-height: 300px;
}

.overview-console .lab-lines {
    min-height: 240px;
}

@media (hover: hover) and (pointer: fine) {
    .support-card:hover {
        transform: translateY(-2px);
        border-color: rgba(36, 87, 255, 0.26);
        background: #ffffff;
    }

    .support-card-featured:hover {
        background: #0d121a;
        border-color: rgba(255, 255, 255, 0.26);
    }
}

.courses-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.course-card {
    border: 1px solid var(--line);
    background: var(--surface-card);
    box-shadow: none;
}

.course-image {
    height: 180px;
    background: #eef3e6;
}

.course-image svg {
    height: 100%;
}

.course-content {
    padding: 28px;
}

.course-description {
    color: var(--muted);
}

.course-details {
    flex-wrap: wrap;
    gap: 8px;
}

.course-duration,
.course-level,
.week-number {
    border: 1px solid rgba(36, 87, 255, 0.14);
    border-radius: 999px;
    background: rgba(36, 87, 255, 0.08);
    color: var(--primary-strong);
}

.course-footer {
    gap: 16px;
}

.course-note {
    color: var(--ink);
}

.enroll-button-success {
    background: var(--success);
}

.about-content,
.overview-content,
.enrollment-content,
.contact-content {
    gap: clamp(32px, 6vw, 72px);
}

.about-text .section-title {
    text-align: left;
    margin-left: 0;
}

.feature,
.highlight,
.contact-method {
    padding: 18px 0;
    border-top: 1px solid var(--line);
}

.feature svg,
.highlight svg,
.contact-method svg {
    flex: 0 0 auto;
    margin-top: 4px;
}

.stat {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.62);
    box-shadow: none;
}

.stat-number {
    color: var(--ink);
}

.course-hero {
    overflow: hidden;
    padding: 88px 0;
    background:
        linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
        var(--ink);
    background-size: 28px 28px;
    text-align: left;
}

.course-hero::before {
    display: none;
}

.course-hero-content {
    max-width: 820px;
}

.breadcrumb {
    font-family: 'JetBrains Mono', monospace;
}

.course-hero-title {
    margin-left: 0;
    color: #ffffff;
}

.course-hero-subtitle {
    margin-left: 0;
    color: rgba(255, 255, 255, 0.74);
}

.course-meta {
    margin-left: 0;
    padding: 0;
}

.meta-item {
    padding: 14px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.curriculum-week,
.addon-card,
.enrollment-card,
.contact-form,
.bank-transfer-info {
    border: 1px solid var(--line);
    background: var(--surface-card);
    box-shadow: none;
}

.week-topics li::before,
.addon-features li::before,
.benefits-list li::before {
    content: "";
    top: 0.72em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

.form-input,
.addon-option,
.enrollment-total {
    border-color: var(--line);
    background: #fffefa;
    border-radius: 8px;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(36, 87, 255, 0.1);
}

.footer {
    background: var(--ink);
}

.footer-links a:hover {
    color: #ffffff;
}

.guide-intro-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 28px;
    align-items: center;
    margin-bottom: 32px;
    padding: 30px;
    border: 1px solid rgba(20, 20, 20, 0.08);
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 18px 50px rgba(16, 22, 31, 0.07);
}

.guide-intro-panel span {
    display: inline-flex;
    margin-bottom: 10px;
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.guide-intro-panel h2 {
    margin-bottom: 10px;
    font-size: clamp(28px, 4vw, 42px);
}

.guide-intro-panel p {
    max-width: 760px;
    margin-bottom: 0;
    color: var(--muted);
}

.guide-intro-stats {
    display: grid;
    place-items: center;
    min-width: 150px;
    min-height: 120px;
    border: 1px solid rgba(0, 87, 255, 0.18);
    border-radius: 8px;
    background: linear-gradient(180deg, #ffffff 0%, #f5f8ff 100%);
}

.guide-intro-stats strong {
    color: var(--text);
    font-size: 42px;
    line-height: 1;
}

.guide-intro-stats span {
    margin: 0;
    color: var(--muted);
    font-size: 12px;
    letter-spacing: 0.06em;
}

.guide-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 14px;
    margin: 28px 0;
}

.guide-pagination button {
    min-width: 118px;
    height: 42px;
    border: 1px solid rgba(20, 20, 20, 0.12);
    border-radius: 999px;
    background: #ffffff;
    color: var(--text);
    font-weight: 800;
    cursor: pointer;
    transition: transform 140ms var(--ease-out), border-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.guide-pagination button:hover:not(:disabled) {
    transform: translateY(-1px);
    border-color: rgba(0, 87, 255, 0.35);
    color: var(--primary);
    box-shadow: 0 12px 28px rgba(16, 22, 31, 0.08);
}

.guide-pagination button:disabled {
    cursor: not-allowed;
    opacity: 0.45;
}

.guide-pagination span {
    min-width: 190px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 700;
    text-align: center;
}

.guide-pagination {
    position: relative;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px;
    border: 1px solid rgba(20, 20, 20, 0.08);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.78);
    box-shadow: 0 18px 48px rgba(16, 22, 31, 0.08);
    backdrop-filter: blur(14px);
}

.guide-page-numbers {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px;
    border: 1px solid rgba(20, 20, 20, 0.06);
    border-radius: 999px;
    background: #f6f8fb;
}

.guide-pagination button.guide-page-arrow,
.guide-pagination button.guide-page-number {
    display: inline-grid;
    place-items: center;
    min-width: 0;
    height: 38px;
    margin: 0;
    border-radius: 999px;
    box-shadow: none;
}

.guide-pagination button.guide-page-arrow {
    min-width: 78px;
    padding: 0 16px;
    background: #10161f;
    border-color: #10161f;
    color: #ffffff;
}

.guide-pagination button.guide-page-arrow:hover:not(:disabled) {
    color: #ffffff;
    border-color: var(--primary);
    background: var(--primary);
}

.guide-pagination button.guide-page-arrow:disabled {
    background: #eef1f5;
    border-color: #eef1f5;
    color: #9aa3af;
    opacity: 1;
}

.guide-pagination button.guide-page-number {
    width: 38px;
    border: 0;
    background: transparent;
    color: #4f5a68;
    font-size: 14px;
}

.guide-pagination button.guide-page-number:hover {
    transform: none;
    background: #ffffff;
    color: var(--primary);
    box-shadow: 0 8px 20px rgba(16, 22, 31, 0.08);
}

.guide-pagination button.guide-page-number.is-active {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 10px 24px rgba(0, 87, 255, 0.28);
}

.guide-page-gap {
    display: inline-grid;
    place-items: center;
    width: 26px;
    min-width: 26px;
    color: #8a94a3;
    font-size: 14px;
    font-weight: 800;
}

.guide-pagination .guide-page-status {
    flex-basis: 100%;
    min-width: 0;
    margin-top: 2px;
    color: #7b8491;
    font-size: 12px;
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

@media (max-width: 900px) {
    .hero-content,
    .courses-grid,
    .support-grid,
    .support-grid-two,
    .profile-grid,
    .profile-strip,
    .hire-grid {
        grid-template-columns: 1fr;
    }

    .support-card {
        min-height: auto;
    }

    .marketplace-grid {
        grid-template-columns: 1fr;
    }

    .hero-lab {
        max-width: 560px;
    }

    .lab-note {
        position: static;
        max-width: none;
        margin-top: 12px;
    }

    .site-search {
        order: 3;
        flex: 1 0 100%;
        max-width: none;
        margin: 0;
    }

    .nav-content {
        flex-wrap: wrap;
        height: auto;
        min-height: 80px;
        padding: 10px 0;
        gap: 10px;
    }

    .nav-links {
        order: 4;
        width: 100%;
    }

    .guide-intro-panel {
        grid-template-columns: 1fr;
    }

    .guide-listing .blog-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .guide-intro-stats {
        justify-items: start;
        min-height: auto;
        padding: 20px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .nav-content {
        min-height: 68px;
    }

    .site-search-control {
        height: 40px;
    }

    .site-search-results {
        position: fixed;
        top: 126px;
        right: 20px;
        left: 20px;
    }

    .guide-intro-panel {
        padding: 22px;
    }

    .guide-listing .blog-grid {
        grid-template-columns: 1fr;
    }

    .guide-pagination {
        border-radius: 22px;
        flex-wrap: wrap;
    }

    .guide-pagination .guide-page-status {
        order: -1;
        flex: 1 0 100%;
    }

    .guide-page-numbers {
        order: 2;
        flex: 1 0 100%;
        justify-content: center;
        overflow-x: auto;
    }

    .guide-pagination button.guide-page-arrow {
        flex: 1;
    }

    .hero {
        min-height: auto;
        padding: 48px 0 36px;
    }

    .hero-actions,
    .course-hero-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .cta-button,
    .ghost-button,
    .secondary-button {
        width: 100%;
        max-width: none;
    }

    .course-footer {
        align-items: stretch;
        flex-direction: column;
    }

    .whatsapp-float {
        right: 20px;
        bottom: 84px;
    }

    .consent-banner {
        right: 16px;
        bottom: 16px;
        grid-template-columns: 1fr;
        width: calc(100vw - 32px);
    }

    .consent-actions {
        justify-content: stretch;
    }

    .consent-button {
        flex: 1;
    }
}

/* Blog */
.blog-hero {
    padding: 92px 0 64px;
    background:
        linear-gradient(135deg, rgba(16, 22, 31, 0.96), rgba(0, 87, 255, 0.84)),
        radial-gradient(circle at 78% 18%, rgba(215, 255, 114, 0.22), transparent 34%);
    color: #ffffff;
}

.blog-hero .breadcrumb,
.blog-hero .breadcrumb a,
.blog-hero .course-hero-subtitle {
    color: rgba(255, 255, 255, 0.82);
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
}

.article-meta span {
    padding: 7px 12px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.88);
    font-size: 14px;
}

.article-meta .author-link {
    color: inherit;
    font-weight: 800;
    text-decoration-color: rgba(255, 255, 255, 0.44);
    text-underline-offset: 3px;
}

.article-meta .author-link:hover {
    color: #ffffff;
    text-decoration-color: #ffffff;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.guide-listing .blog-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.blog-card {
    display: flex;
    min-height: 260px;
    flex-direction: column;
    justify-content: space-between;
    padding: 26px;
    border: 1px solid rgba(20, 20, 20, 0.08);
    border-radius: 8px;
    background: #ffffff;
    color: var(--text);
    text-decoration: none;
    transition: transform 160ms var(--ease-out), border-color 160ms ease, box-shadow 160ms ease;
}

.blog-card span {
    width: max-content;
    padding: 4px 10px;
    border-radius: 999px;
    background: #eef4ff;
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
}

.blog-card h3 {
    margin: 18px 0 10px;
}

.blog-card p {
    color: var(--muted);
    font-size: 16px;
}

.blog-card strong {
    color: var(--primary);
}

.blog-card:hover {
    border-color: rgba(0, 87, 255, 0.35);
    box-shadow: 0 18px 45px rgba(20, 20, 20, 0.08);
    transform: translateY(-3px);
}

.article-layout {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr) 280px;
    gap: 28px;
    align-items: start;
}

.blog-article-section .container {
    max-width: 1680px;
    padding-inline: 40px;
}

.article-body {
    padding: 52px;
    border: 1px solid rgba(20, 20, 20, 0.08);
    border-radius: 8px;
    background: #ffffff;
    min-width: 0;
}

.article-body h2,
.article-body h3,
.article-body h4 {
    margin-top: 38px;
}

.article-body h2:first-child {
    margin-top: 0;
}

.article-body p,
.article-body li {
    color: #2d343c;
}

.article-body ul,
.article-body ol {
    margin: 0 0 22px 24px;
}

.article-body code {
    padding: 2px 6px;
    border-radius: 5px;
    background: #eef4ff;
    color: #0b3b9d;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.92em;
}

.article-body pre {
    position: relative;
    max-width: 100%;
    margin: 24px 0;
    padding: 22px;
    overflow-x: auto;
    border-radius: 8px;
    background: #10161f;
    color: #eef4ff;
}

.article-body pre code {
    padding: 0;
    background: transparent;
    color: inherit;
}

.article-body pre.copyable-code {
    padding-top: 58px;
    border: 1px solid rgba(215, 255, 114, 0.14);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.copy-code-button {
    position: absolute;
    top: 12px;
    right: 12px;
    min-width: 78px;
    min-height: 34px;
    padding: 0 12px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
    font: inherit;
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
    transition: transform 150ms var(--ease-out), background-color 160ms ease, border-color 160ms ease;
}

.copy-code-button:focus-visible {
    outline: 3px solid rgba(215, 255, 114, 0.36);
    outline-offset: 2px;
}

.copy-code-button:active {
    transform: scale(0.96);
}

.article-body pre.is-copied .copy-code-button,
.copy-code-button:hover {
    border-color: rgba(215, 255, 114, 0.5);
    background: rgba(215, 255, 114, 0.16);
}

.article-body pre.output-block,
.article-body pre.visual-block {
    border: 1px solid rgba(20, 20, 20, 0.08);
    background: #f8fbff;
    color: #26313f;
    box-shadow: none;
}

.article-body pre.output-block {
    border-left: 4px solid rgba(0, 87, 255, 0.44);
}

.output-label {
    margin: 18px 0 -12px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.article-body pre.visual-block {
    border-left: 4px solid rgba(24, 113, 75, 0.42);
    background:
        linear-gradient(rgba(16, 22, 31, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(16, 22, 31, 0.035) 1px, transparent 1px),
        #fbfcf8;
    background-size: 22px 22px;
}

.article-status-line,
.article-alert {
    display: grid;
    gap: 6px;
    margin: 24px 0;
    padding: 18px 20px;
    border-radius: 8px;
    color: #17202c;
}

.article-status-line {
    border: 1px solid rgba(25, 135, 84, 0.18);
    background: #f3fbf6;
}

.article-alert {
    border: 1px solid rgba(220, 53, 69, 0.18);
    background: #fff7f7;
}

.article-alert-warning {
    border-color: rgba(245, 158, 11, 0.24);
    background: #fffaf0;
}

.article-status-line strong,
.article-alert strong {
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.article-status-line span,
.article-alert span {
    color: #3a4450;
    font-size: 16px;
    line-height: 1.55;
}

.article-step-list {
    padding: 18px 22px 18px 46px;
    border: 1px solid rgba(0, 87, 255, 0.12);
    border-radius: 8px;
    background: #f8fbff;
}

.diagram-card {
    margin: 28px 0;
    padding: 26px;
    overflow-x: auto;
    border: 1px solid rgba(0, 87, 255, 0.14);
    border-radius: 8px;
    background: linear-gradient(180deg, #ffffff, #f8fbff);
}

.diagram-card .mermaid {
    min-width: 640px;
    font-family: 'Outfit', sans-serif;
}

.article-table-wrap {
    margin: 24px 0;
    overflow-x: auto;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    background: #ffffff;
}

.article-body th,
.article-body td {
    padding: 12px 14px;
    border: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.article-body th {
    background: #f3f6ed;
    font-weight: 700;
}

.article-sidebar {
    position: sticky;
    top: 104px;
    display: grid;
    gap: 18px;
}

.article-toc {
    position: sticky;
    top: 104px;
    max-height: calc(100vh - 130px);
    padding: 22px;
    overflow: auto;
    border: 1px solid rgba(20, 20, 20, 0.08);
    border-radius: 8px;
    background: #ffffff;
}

.article-toc div {
    margin-bottom: 16px;
}

.article-toc span {
    display: block;
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.article-toc strong {
    display: block;
    margin-top: 3px;
    font-size: 18px;
}

.article-toc ol {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.article-toc a {
    display: block;
    color: #2d343c;
    font-size: 14px;
    line-height: 1.35;
    text-decoration: none;
}

.article-toc a:hover {
    color: var(--primary);
}

.toc-level-3 {
    padding-left: 12px;
}

.sidebar-panel {
    padding: 24px;
    border: 1px solid rgba(20, 20, 20, 0.08);
    border-radius: 8px;
    background: #ffffff;
}

.sidebar-panel a {
    display: block;
    margin-top: 12px;
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
}

.author-mini-card {
    padding: 20px;
}

.author-mini-head {
    display: grid;
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 14px;
    align-items: center;
    margin-bottom: 16px;
}

.author-mini-head img {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid rgba(0, 87, 255, 0.18);
}

.author-mini-head span {
    display: block;
    color: var(--primary);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.author-mini-head h3 {
    margin: 3px 0 0;
    font-size: 18px;
    line-height: 1.15;
}

.author-mini-card p {
    margin-bottom: 14px;
    color: #49515c;
    font-size: 14px;
    line-height: 1.55;
}

.author-mini-actions {
    display: grid;
    gap: 9px;
}

.sidebar-panel .author-mini-actions a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: 0;
    padding: 10px 12px;
    border: 1px solid rgba(0, 87, 255, 0.14);
    border-radius: 8px;
    background: #f8fbff;
    color: #17202c;
    font-size: 13px;
}

.sidebar-panel .author-mini-actions a:hover {
    border-color: rgba(0, 87, 255, 0.32);
    color: var(--primary);
}

.article-cta {
    margin-top: 44px;
    padding: 28px;
    border-radius: 8px;
    background: #f3f6ed;
    border: 1px solid #dce4d3;
}

.article-pager {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 42px;
}

.pager-link {
    display: grid;
    gap: 7px;
    min-height: 104px;
    padding: 20px;
    border: 1px solid rgba(20, 20, 20, 0.1);
    border-radius: 8px;
    background: #ffffff;
    color: #17202c;
    text-decoration: none;
    transition: border-color 180ms var(--ease-out), transform 180ms var(--ease-out), box-shadow 180ms var(--ease-out);
}

.pager-link:hover {
    border-color: rgba(0, 87, 255, 0.34);
    box-shadow: 0 16px 34px rgba(23, 32, 44, 0.08);
    transform: translateY(-2px);
}

.pager-link span {
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.pager-link strong {
    font-size: 18px;
    line-height: 1.25;
}

.pager-prev::before,
.pager-next::before {
    color: var(--muted);
    font-weight: 800;
}

.pager-prev::before {
    content: "<";
}

.pager-next {
    text-align: right;
}

.pager-next::before {
    content: ">";
}

.faq-accordion {
    margin-top: 44px;
}

.faq-accordion details {
    border-top: 1px solid var(--border);
}

.faq-accordion details:last-child {
    border-bottom: 1px solid var(--border);
}

.faq-accordion summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 18px 0;
    cursor: pointer;
    color: #17202c;
    font-weight: 700;
    list-style: none;
}

.faq-accordion summary::-webkit-details-marker {
    display: none;
}

.faq-accordion summary strong {
    display: grid;
    width: 28px;
    height: 28px;
    place-items: center;
    border: 1px solid rgba(0, 87, 255, 0.28);
    border-radius: 999px;
    color: var(--primary);
    transition: transform 160ms var(--ease-out);
}

.faq-accordion details[open] summary strong {
    transform: rotate(45deg);
}

.faq-accordion details > div {
    padding: 0 0 20px;
}

@media (max-width: 1280px) {
    .article-layout {
        grid-template-columns: minmax(0, 1fr) 280px;
    }

    .article-toc {
        grid-column: 1 / -1;
        position: static;
        max-height: none;
    }
}

@media (max-width: 980px) {
    .blog-grid,
    .article-layout {
        grid-template-columns: 1fr;
    }

    .article-sidebar {
        position: static;
    }

    .article-pager {
        grid-template-columns: 1fr;
    }

    .pager-next {
        text-align: left;
    }
}

@media (max-width: 640px) {
    .blog-hero {
        padding: 64px 0 44px;
    }

    .article-body {
        padding: 24px;
    }

    .blog-article-section .container {
        padding-inline: 20px;
    }

    .blog-card {
        min-height: auto;
    }

    .diagram-card .mermaid {
        min-width: 520px;
    }
}