* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-family: system-ui, sans-serif;
}

:root {
    /* Brand palette: #174fa6 is the canonical brand color. */
    --color-brand-50: #eef6ff;
    --color-brand-100: #dae9ff;
    --color-brand-200: #b8d3fc;
    --color-brand-300: #8eb6f4;
    --color-brand-400: #5c91e7;
    --color-brand-500: #2d6dd3;
    --color-brand-600: #174fa6;
    --color-brand-700: #103e86;
    --color-brand-800: #0d3067;
    --color-brand-900: #09224a;
    --color-brand-950: #041127;

    /* Semantic color tokens. Components should use these aliases. */
    --color-action-primary: var(--color-brand-600);
    --color-action-primary-hover: var(--color-brand-700);
    --color-action-primary-active: var(--color-brand-800);
    --color-focus-ring: rgb(23 79 166 / 30%);
    --color-on-primary: #ffffff;
    --color-text-strong: #171717;
    --color-text: #404040;
    --color-text-muted: #71717a;
    --color-surface: #ffffff;
    --color-surface-subtle: #fafafa;
    --color-border: #e5e5e5;
    --color-status-error: #721c24;
    --color-status-success: #155724;
    --color-state-complete: #166534;
    --color-state-complete-surface: #f0fdf4;
    --color-state-current: #9f1239;
    --color-state-current-surface: #fff1f2;
    --color-state-future: #854d0e;
    --color-state-future-surface: #fefce8;
    --siteWidth: 1200px;
    --container-padding: 0.75rem;
    --header-height: 3.5rem;
    --radius: 0.5rem;
    --boxShadow: rgba(0, 0, 0, 0.1) 0px 1px 3px 0px, rgba(0, 0, 0, 0.06) 0px 1px 2px 0px;
}

html {
    box-sizing: inherit;
    scroll-behavior: smooth;
    font-size: 16px;
    line-height: 1.6;
}

body {
    position: relative;
    color: var(--color-text);
    margin: 0 auto;
    background-color: var(--color-surface);
    overflow-x: hidden;
}

/* GLOBAL CSS */
img {
    max-width: 100%;
    height: auto;
}

p:not(:last-child) {
    margin-bottom: 1.5rem;
}

.container {
    width: 100%;
    max-width: var(--siteWidth);
    margin: 0 auto;
    padding: var(--container-padding);
}

/* HEADER CSS */
.skip-link {
    position: fixed;
    top: 0.5rem;
    left: 0.75rem;
    z-index: 1001;
    transform: translateY(-150%);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    background-color: var(--color-action-primary);
    color: var(--color-on-primary);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    height: var(--header-height);
    border-bottom: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 10;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    gap: 0.75rem;
    padding-block: 0;
}

.header-brand {
    display: flex;
    align-items: center;
    min-width: 0;
    gap: 0;
}

.site-header .logo {
    text-decoration: none;
    color: var(--color-text-strong);
    font-weight: 600;
    font-size: 1rem;
    line-height: 1;
    display: flex;
    align-items: center;
    min-width: 0;
    min-height: 44px;
}

.header-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    border-radius: var(--radius);
    background-color: transparent;
    color: var(--color-text-strong);
    cursor: pointer;
    text-decoration: none;
    touch-action: manipulation;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.header-action:is(:hover, :active) {
    background-color: var(--color-surface-subtle);
    color: var(--color-action-primary);
}

.header-action:focus-visible,
.site-header .logo:focus-visible,
.site-menu a:focus-visible,
.skip-link:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 2px;
}

#menu-toggle {
    margin-inline-start: calc(0px - var(--container-padding));
}

.site-header .install-app {
    margin-inline-end: calc(0px - var(--container-padding));
}

#menu-toggle:focus-visible,
.site-header .install-app:focus-visible {
    outline-offset: -3px;
}

.header-action svg,
.install-app img {
    width: 20px;
    height: 20px;
}

.site-menu {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(20rem, 88vw);
    max-width: none;
    height: 100dvh;
    max-height: none;
    margin: 0;
    padding: 0;
    border: 0;
    background-color: var(--color-surface);
    color: var(--color-text);
    box-shadow: var(--boxShadow);
    overscroll-behavior: contain;
}

.site-menu[open] {
    animation: drawer-in 0.2s ease-out;
}

.site-menu.is-closing {
    animation: drawer-out 0.2s ease-in;
}

.site-menu::backdrop {
    background-color: rgb(4 17 39 / 45%);
    animation: backdrop-in 0.2s ease-out;
}

.site-menu.is-closing::backdrop {
    animation: backdrop-out 0.2s ease-in;
}

.site-menu-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 100%;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
}

.site-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding-inline: 0.75rem;
    border-bottom: 1px solid var(--color-border);
}

.site-menu-header h2 {
    color: var(--color-text-strong);
    font-size: 1rem;
    font-weight: 600;
}

.site-menu nav {
    display: grid;
    gap: 0.25rem;
    padding: 0.75rem;
}

.site-menu nav a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    touch-action: manipulation;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.site-menu nav a:is(:hover, :active),
.site-menu nav a[aria-current="page"] {
    background-color: var(--color-brand-50);
    color: var(--color-action-primary);
}

.site-menu-install {
    margin-top: auto;
    padding: 0.75rem;
    border-top: 1px solid var(--color-border);
}

.drawer-install-app {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 44px;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-action-primary);
    border-radius: var(--radius);
    background-color: var(--color-action-primary);
    color: var(--color-on-primary);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.25;
    text-decoration: none;
    touch-action: manipulation;
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.1s ease;
}

.drawer-install-app:hover {
    border-color: var(--color-action-primary-hover);
    background-color: var(--color-action-primary-hover);
}

.drawer-install-app:active {
    border-color: var(--color-action-primary-active);
    background-color: var(--color-action-primary-active);
    transform: translateY(1px);
}

.drawer-install-app img {
    width: 20px;
    height: 20px;
    filter: brightness(0) invert(1);
}

#main-content {
    scroll-margin-top: calc(var(--header-height) + 0.5rem);
}

@keyframes drawer-in {
    from {
        transform: translateX(-100%);
    }
}

@keyframes backdrop-in {
    from {
        opacity: 0;
    }
}

@keyframes drawer-out {
    to {
        transform: translateX(-100%);
    }
}

@keyframes backdrop-out {
    to {
        opacity: 0;
    }
}

/* MAIN */
main {
    min-height: calc(100dvh - var(--header-height) - 5rem);
}

main.container {
    padding-top: 1.5rem;
    padding-bottom: 4rem;
}

main > *:not(:last-child) {
    margin-bottom: 1.5rem;
}

div.ad-box {
    background-color: var(--color-surface-subtle);
    height: 280px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

/* HOME PAGE */
.section-heading {
    background-color: var(--color-action-primary);
    border-radius: var(--radius);
    padding: 0.5rem 0.75rem;
    color: var(--color-on-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    overflow-wrap: anywhere;
    text-wrap: balance;
}

.list-container {
    display: grid;
    gap: 1rem;
}

.list-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background-color: var(--color-surface);
    padding: 0.75rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    text-decoration: none;
    color: var(--color-text);
    position: relative;
    touch-action: manipulation;
    transition: background-color 0.2s ease;
}

.list-item:hover {
    background-color: var(--color-surface-subtle);
}

.list-item:active {
    background-color: var(--color-brand-50);
}

.list-item:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 2px;
}

.item-info {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    column-gap: 0.5rem;
    flex: 1;
    min-width: 0;
}

.item-info h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-strong);
    overflow-wrap: anywhere;
}

.item-info p {
    grid-column: 1 / -1;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.25;
    white-space: nowrap;
}

.status-badge--complete {
    background-color: var(--color-state-complete-surface);
    color: var(--color-state-complete);
}

.status-badge--current {
    gap: 0.375rem;
    background-color: var(--color-state-current-surface);
    color: var(--color-state-current);
}

.status-badge--current::before {
    content: "";
    width: 0.375rem;
    height: 0.375rem;
    flex: 0 0 0.375rem;
    border-radius: 50%;
    background-color: currentColor;
    transform-origin: center;
    animation: status-pulse 1.6s ease-in-out infinite;
}

.status-badge--future {
    background-color: var(--color-state-future-surface);
    color: var(--color-state-future);
}

@keyframes status-pulse {
    0%,
    100% {
        opacity: 0.45;
        transform: scale(0.8);
    }

    50% {
        opacity: 1;
        transform: scale(1);
    }
}

/* LATEST ARTICLES */
.articles-header {
    position: relative;
}

.articles-header h2 {
    min-width: 0;
    padding-inline-end: 5rem;
    font: inherit;
}

.articles-header a {
    position: absolute;
    top: 50%;
    inset-inline-end: 0.25rem;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    color: var(--color-on-primary);
    font-size: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    touch-action: manipulation;
    transform: translateY(-50%);
    transition: background-color 0.2s ease;
}

.articles-header a:hover {
    background-color: rgb(255 255 255 / 12%);
}

.articles-header a:active {
    background-color: rgb(255 255 255 / 20%);
}

.articles-header a:focus-visible {
    outline: 3px solid var(--color-on-primary);
    outline-offset: -3px;
}

.articles-container {
    display: grid;
    gap: 1rem;
}

.article-card {
    min-width: 0;
}

.article-card > a {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background-color: var(--color-surface);
    color: var(--color-text);
    text-decoration: none;
    touch-action: manipulation;
    transition: background-color 0.2s ease;
}

.article-card > a:hover {
    background-color: var(--color-surface-subtle);
}

.article-card > a:active {
    background-color: var(--color-brand-50);
}

.article-card > a:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 2px;
}

.article-card img {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-brand-50);
}

.article-card-content {
    display: grid;
    gap: 0.5rem;
    padding: 0.75rem;
}

.article-card h3 {
    display: -webkit-box;
    overflow: hidden;
    color: var(--color-text-strong);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.4;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-clamp: 2;
}

.article-card-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    column-gap: 0.25rem;
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

/* RESULT CHECKER */
.result-checker {
    padding: 1rem;
    border: 1px solid var(--color-brand-200);
    border-top: 4px solid var(--color-action-primary);
    border-radius: var(--radius);
    background-color: var(--color-brand-50);
}

.result-checker fieldset {
    min-width: 0;
    border: 0;
}

.result-checker legend {
    width: 100%;
    color: var(--color-text-strong);
    line-height: 1.4;
    text-wrap: balance;
}

.result-checker-kicker,
.result-checker-title {
    display: block;
}

.result-checker-kicker {
    color: var(--color-action-primary);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.result-checker-title {
    margin-top: 0.125rem;
    font-size: 1rem;
    font-weight: 600;
}

.result-checker-intro {
    margin: 0.375rem 0 1rem;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.result-form-grid {
    display: grid;
    gap: 0.75rem;
}

.form-field {
    display: grid;
    min-width: 0;
    gap: 0.25rem;
}

.form-field label {
    color: var(--color-text-strong);
    font-size: 0.8125rem;
    font-weight: 600;
}

.form-field input,
.form-field select {
    width: 100%;
    min-width: 0;
    min-height: 44px;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-brand-200);
    border-radius: var(--radius);
    background-color: var(--color-surface);
    color: var(--color-text);
    font: inherit;
    font-size: 0.875rem;
}

.form-field input::placeholder {
    color: var(--color-text-muted);
}

.form-field input:hover,
.form-field select:hover {
    border-color: var(--color-brand-400);
}

.form-field input:focus-visible,
.form-field select:focus-visible {
    border-color: var(--color-action-primary);
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 1px;
}

.result-submit {
    min-height: 44px;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-action-primary);
    border-radius: var(--radius);
    background-color: var(--color-action-primary);
    color: var(--color-on-primary);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    touch-action: manipulation;
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.1s ease;
}

.result-submit:hover {
    border-color: var(--color-action-primary-hover);
    background-color: var(--color-action-primary-hover);
}

.result-submit:active {
    border-color: var(--color-action-primary-active);
    background-color: var(--color-action-primary-active);
    transform: translateY(1px);
}

.result-submit:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 2px;
}

.article-page > .result-checker {
    margin-bottom: 0;
}

.article-page > .result-article-divider {
    width: 100%;
    margin: 1.5rem 0;
    border: 0;
    border-top: 1px solid var(--color-border);
}

/* ARTICLE PAGE */
.article-layout,
.article-layout > *,
.article-view {
    min-width: 0;
}

.article-toc {
    margin-bottom: 1.5rem;
}

.article-toc details {
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background-color: var(--color-surface);
}

.article-toc summary {
    min-height: 44px;
    padding: 0.5rem 0.75rem;
    color: var(--color-text-strong);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.75rem;
    cursor: pointer;
    touch-action: manipulation;
}

.article-toc summary:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: -3px;
}

.article-toc nav {
    border-top: 1px solid var(--color-border);
    padding: 0.25rem;
}

.article-toc ol {
    list-style: none;
}

.article-toc a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 0.5rem;
    border-radius: calc(var(--radius) - 0.125rem);
    color: var(--color-text);
    font-size: 0.8125rem;
    line-height: 1.35;
    text-decoration: none;
    overflow-wrap: anywhere;
    touch-action: manipulation;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.article-toc a:hover {
    background-color: var(--color-surface-subtle);
    color: var(--color-action-primary-hover);
}

.article-toc a:active,
.article-toc a[aria-current="location"] {
    background-color: var(--color-brand-50);
    color: var(--color-action-primary);
}

.article-toc a:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: -3px;
}

.article-view {
    width: 100%;
}

.article-header {
    margin-bottom: 1.5rem;
}

.article-header h1 {
    color: var(--color-text-strong);
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
    overflow-wrap: anywhere;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.25rem;
    margin-top: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

.article-meta a,
.article-body a {
    color: var(--color-action-primary);
    text-underline-offset: 0.15em;
}

.article-meta a:hover,
.article-body a:hover {
    color: var(--color-action-primary-hover);
}

.article-meta a:active,
.article-body a:active {
    color: var(--color-action-primary-active);
}

.article-meta a:focus-visible,
.article-body a:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 2px;
}

.article-cover {
    display: block;
    width: 100%;
    height: auto;
    margin-top: 1rem;
    border-radius: var(--radius);
    background-color: var(--color-brand-50);
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.article-body {
    color: var(--color-text);
    font-size: 0.875rem;
    line-height: 1.7;
    overflow-wrap: break-word;
}

.article-body h2,
.article-body h3 {
    color: var(--color-text-strong);
    font-weight: 600;
    overflow-wrap: anywhere;
    scroll-margin-top: calc(var(--header-height) + 0.75rem);
    text-wrap: balance;
}

.article-body h2 {
    margin: 1.5rem 0 0.5rem;
    font-size: 1rem;
}

.article-body h3 {
    margin: 1rem 0 0.5rem;
    font-size: 0.875rem;
}

.article-body ol,
.article-body ul {
    margin: 0 0 1.5rem;
    padding-inline-start: 1.25rem;
}

.article-body li + li {
    margin-top: 0.25rem;
}

.article-body table {
    width: 100%;
    margin-bottom: 1.5rem;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

.article-body th,
.article-body td {
    padding: 0.5rem;
    border: 1px solid var(--color-border);
    text-align: start;
    vertical-align: top;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.article-body th {
    background-color: var(--color-brand-50);
    color: var(--color-text-strong);
    font-weight: 600;
}

.article-body img,
.article-body video,
.article-body embed,
.article-body iframe {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto 1.5rem;
    border-radius: var(--radius);
}

.article-body video,
.article-body embed,
.article-body iframe {
    width: 100%;
    aspect-ratio: 16 / 9;
    background-color: var(--color-surface-subtle);
}

.article-body iframe {
    border: 0;
}

/* ABOUT CSS */
.about > div {
    border: 1px solid var(--color-border);
    padding: 0.75rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    background-color: var(--color-surface-subtle);
    text-align: justify;
}

/* FOOTER CSS */
footer {
    background-color: var(--color-text-strong);
    font-size: 0.75rem;
    color: var(--color-surface);
    min-height: 5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

footer a {
    color: var(--color-surface);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

footer .container {
    display: grid;
    gap: 0.5rem;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0.75rem;
}

.footer-links {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

/* DESKTOP CSS */
@media only screen and (min-width: 768px) {

    .result-form-grid {
        grid-template-columns: minmax(0, 1.2fr) repeat(2, minmax(0, 1fr)) minmax(9rem, 0.8fr);
        align-items: end;
    }

    .result-submit {
        width: 100%;
    }

    .article-view.has-toc {
        display: grid;
        grid-template-columns: minmax(11rem, 14rem) minmax(0, 1fr);
        align-items: start;
        column-gap: 1.5rem;
    }

    .article-view.has-toc .article-header,
    .article-view.has-toc .article-body {
        grid-column: 2;
    }

    .article-view.has-toc .article-header {
        grid-row: 1;
    }

    .article-view.has-toc .article-body {
        grid-row: 2;
    }

    .article-toc {
        grid-column: 1;
        grid-row: 1 / span 2;
        align-self: start;
        position: sticky;
        top: calc(var(--header-height) + 1.5rem);
        max-height: calc(100dvh - var(--header-height) - 3rem);
        margin-bottom: 0;
        overflow-y: auto;
    }

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

    .articles-container {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    footer .container {
        display: flex;
        justify-content: space-between;
        font-size: 0.875rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .site-menu[open],
    .site-menu::backdrop {
        animation: none;
    }

    .status-badge--current::before {
        animation: none;
    }
}