/* ==== CodeCraft.gr — article page (/article/view/{slug}) ==========================================================
   Loaded ONLY by pages/article/article.php, after styles.css. Everything is scoped to .art--article, so the glossary, privacy, terms
   and cookies pages (which share the older .art-* rules in styles.css) are untouched.

   Reading principle: a calm dark page, text straight on it, hairlines only where they separate, colour reserved for links, kickers, focus.
   1. tokens   2. page + header   3. layout + sidebar   4. body typography   5. technical content   6. interactive components
   7. story footer, related, comments   8. progress bar + TOC   9. responsive / motion / print
   ================================================================================================================= */

/* ---- 1. tokens -------------------------------------------------------------------------------------------------- */
.art--article {
    /* background / surface */
    --a-bg:        #04080f;
    --a-surface:   rgba(255, 255, 255, .035);      /* callouts, inline code, interactive stages */
    --a-surface-2: rgba(255, 255, 255, .07);       /* hover / pressed on a surface */
    --a-code-bg:   #070d19;
    --a-line:      rgba(170, 195, 240, .13);       /* hairlines */
    --a-line-2:    rgba(170, 195, 240, .26);       /* controls, table header rule */
    /* text — off-white, never #fff; contrast on --a-bg: text 13.5:1, text-2 9.4:1, muted 6.4:1 */
    --a-text:      #dfe5f1;
    --a-text-2:    #b6bfd2;
    --a-muted:     #8f9ab2;
    --a-head:      #f1f4fa;
    /* accent: the CodeCraft cyan, a touch softer for running text; violet only as a quiet secondary mark */
    --a-accent:    #5ee6f2;
    --a-accent-2:  #b78bff;
    --a-accent-line: rgba(94, 230, 242, .42);
    --a-accent-bg: rgba(94, 230, 242, .08);
    /* type */
    --a-font: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Roboto, Arial, sans-serif;
    --a-mono: ui-monospace, "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    --fs-body:  clamp(1.0625rem, 1.02rem + .2vw, 1.125rem);   /* 17 → 18px */
    --fs-small: .875rem;
    --fs-h1:    clamp(2rem, 1.3rem + 3vw, 3.25rem);
    --fs-h2:    clamp(1.5rem, 1.28rem + .9vw, 1.875rem);
    --fs-h3:    clamp(1.1875rem, 1.1rem + .35vw, 1.375rem);
    --lh-body:  1.78;
    /* spacing scale (rem) */
    --s-1: .25rem; --s-2: .5rem; --s-3: .75rem; --s-4: 1rem; --s-5: 1.5rem; --s-6: 2rem; --s-7: 3rem; --s-8: 4.5rem; --s-9: 6rem;
    /* radii */
    --r-sm: 6px; --r-md: 10px; --r-pill: 999px;
    /* measures */
    --a-main: 720px; --a-side: 280px; --a-gap: 48px; --a-bleed: 0px;
    --a-sticky: calc(var(--nav-h, 62px) + var(--cat-h, 0px) + 24px);
}
@media (min-width: 1200px) { .art--article { --a-gap: 96px; --a-bleed: 40px; } }

/* ---- 2. page + header ------------------------------------------------------------------------------------------- */
body:has(.art--article) {
    background-color: var(--midnight-black, #020814);
    background-image: radial-gradient(ellipse 60% 420px at 85% 0, rgba(40, 110, 140, .22), transparent 70%), linear-gradient(180deg, #05090f 0, #03070d 100%);
    background-attachment: scroll;
    background-size: 100% 100%;
    background-repeat: no-repeat;
}
.art--article { color-scheme: dark; padding: 0 0 var(--s-8); background: none; font-family: var(--a-font); color: var(--a-text); }
.art.art--article > .art-container { max-width: 1160px; padding-left: clamp(1rem, 3vw, 2rem); padding-right: clamp(1rem, 3vw, 2rem); }
.art--article :focus-visible { outline: 2px solid var(--a-accent); outline-offset: 3px; border-radius: var(--r-sm); }
.art--article a { text-decoration: none; }

.art--article .art-header { max-width: none; padding: var(--s-6) 0 var(--s-6); }   /* the headline runs the full width of the page column, so no empty block is left beside it */
.art--article .art-crumbs { gap: .1rem .5rem; margin: 0 0 var(--s-6); font-size: var(--fs-small); color: var(--a-muted); }
.art--article .art-crumbs a { color: var(--a-muted); transition: color .15s; }
.art--article .art-crumbs a:hover { color: var(--a-accent); }
.art--article .art-crumbs [aria-current] { color: var(--a-text-2); }
.art--article .art-kickers { margin: 0 0 var(--s-4); gap: .3rem 1.1rem; }
.art--article .art-kicker { display: inline-block; font-size: .8125rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--a-accent); }
.art--article .art-kicker:hover { text-decoration: underline; text-underline-offset: 4px; }
.art--article .art-title { margin: 0; font-size: var(--fs-h1); font-weight: 750; line-height: 1.12; letter-spacing: -.025em; color: var(--a-head); text-wrap: pretty; }
.art--article .art-deck { max-width: 78ch; margin: var(--s-5) 0 0; font-size: clamp(1.125rem, 1.04rem + .4vw, 1.3125rem); line-height: 1.6; font-weight: 400; color: var(--a-text-2); text-wrap: pretty; }
.art--article .art-meta { display: flex; flex-wrap: wrap; align-items: center; gap: .25rem .6rem; margin: var(--s-5) 0 0; padding: 0; border: 0; font-size: .9375rem; color: var(--a-muted); }
.art--article .art-author { color: var(--a-text); font-weight: 600; }

/* cover: the whole picture, never cropped, never taller than a comfortable share of the screen */
.art--article .art-hero { width: 100%; max-width: none; margin: 0 0 var(--s-7); padding: 0; border: 0; border-radius: var(--r-md); background: none; overflow: hidden; aspect-ratio: auto; }
.art--article .art-hero img { display: block; width: 100%; height: auto; max-height: min(66vh, 640px); object-fit: contain; border: 0; border-radius: var(--r-md); background: #060b15; }

/* ---- 3. layout + sidebar ---------------------------------------------------------------------------------------- */
.art--article .art-layout { display: grid; grid-template-columns: minmax(0, var(--a-main)) var(--a-side); column-gap: var(--a-gap); justify-content: space-between; align-items: stretch; }
.art--article .art-main { min-width: 0; }
.art--article .art-side { position: static; display: flex; flex-direction: column; gap: 0; margin: 0; padding-top: .35rem; }
.art--article .art-side > * + * { margin-top: var(--s-7); padding-top: 0; border-top: 0; }
.art--article .art-side-block h2,
.art--article .art-toc-title { margin: 0 0 var(--s-2); padding: 0; border: 0; font-size: .75rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--a-muted); }
.art--article .art-mini { display: flex; gap: var(--s-3); align-items: flex-start; padding: var(--s-3) 0; border: 0; border-radius: var(--r-sm); text-decoration: none; color: inherit; }
.art--article .art-mini + .art-mini { border-top: 0; }
.art--article .art-mini-thumb { flex: 0 0 76px; aspect-ratio: 3 / 2; border-radius: var(--r-sm); background: #060b15; }
.art--article .art-mini-thumb img { transition: transform .3s ease; }
.art--article .art-mini:hover .art-mini-thumb img { transform: scale(1.04); }
.art--article .art-mini-text { gap: .2rem; min-width: 0; }
.art--article .art-mini-meta { font-size: .75rem; letter-spacing: 0; color: var(--a-muted); }
.art--article .art-mini-title { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; font-size: .9375rem; font-weight: 500; line-height: 1.4; color: var(--a-text-2); transition: color .15s; }
.art--article .art-mini:hover .art-mini-title { color: var(--a-accent); }
.art--article .art-side .ad-slot, .art--article .art-side .ad-placeholder { margin-top: 0; }
@media (min-width: 992px) {
    /* with no table of contents the ad rides along beside the story (as before); with one, the TOC rides and the ad stays at the top */
    .art--article .art-side:not(.art-side--toc) .ad-slot, .art--article .art-side:not(.art-side--toc) .ad-placeholder { position: sticky; top: var(--a-sticky); }
    .art--article .art-side--toc .ad-slot, .art--article .art-side--toc .ad-placeholder { position: static; }
}
.art--article .art-ad { margin: var(--s-7) 0; }

/* "more stories" band under a story that has a table of contents (its sidebar lists live here instead) */
.art--article .art-more { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-6) var(--s-8); margin-top: var(--s-8); }
.art--article .art-more .art-mini-thumb { flex-basis: 96px; }
.art--article .art-more .art-mini-title { font-size: 1rem; }

/* ---- 4. body typography ----------------------------------------------------------------------------------------- */
.art--article .art-body { padding: 0; border: 0; border-radius: 0; background: none; box-shadow: none;
    font-family: var(--a-font); font-size: var(--fs-body); line-height: var(--lh-body); color: var(--a-text);
    overflow-wrap: break-word; font-kerning: normal; text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; }
.art--article .art-body--cont { margin-top: 0; }
.art--article .art-body > * { max-width: 100%; }
.art--article .art-body > *:first-child { margin-top: 0; }
.art--article .art-body p { margin: 0 0 var(--s-5); }
.art--article .art-body > p:first-of-type { font-size: inherit; color: var(--a-text); }
.art--article .art-body strong { color: var(--a-head); font-weight: 650; }
.art--article .art-body em { color: inherit; }
.art--article .art-body a { color: var(--a-accent); text-decoration: underline; text-decoration-thickness: 1px; text-decoration-color: var(--a-accent-line); text-underline-offset: .22em; transition: color .15s, text-decoration-color .15s; }
.art--article .art-body a:hover { color: #fff; text-decoration-color: var(--a-accent); }
.art--article .art-body h2, .art--article .art-body h3, .art--article .art-body h4 { color: var(--a-head); scroll-margin-top: var(--a-sticky); text-wrap: balance; }
.art--article .art-body h2 { margin: var(--s-8) 0 var(--s-4); font-size: var(--fs-h2); font-weight: 700; line-height: 1.28; letter-spacing: -.015em; }
.art--article .art-body h3 { margin: var(--s-7) 0 var(--s-3); font-size: var(--fs-h3); font-weight: 650; line-height: 1.35; letter-spacing: -.005em; }
.art--article .art-body h4 { margin: var(--s-6) 0 var(--s-2); font-size: 1rem; font-weight: 650; line-height: 1.4; letter-spacing: .01em; color: var(--a-text-2); }
.art--article .art-body h2 + h3 { margin-top: var(--s-4); }
.art--article .art-body ul, .art--article .art-body ol { margin: 0 0 var(--s-5); padding-left: 1.4em; }
.art--article .art-body li { margin: 0 0 var(--s-2); padding-left: .25em; }
.art--article .art-body li::marker { color: var(--a-muted); }
.art--article .art-body li > ul, .art--article .art-body li > ol { margin: var(--s-2) 0 0; }
.art--article .art-body hr { margin: var(--s-8) auto; width: 4rem; border: 0; border-top: 1px solid var(--a-line-2); }
.art--article .art-body mark { padding: 0 .2em; border-radius: 3px; background: rgba(183, 139, 255, .22); color: inherit; }
.art--article .art-body sup, .art--article .art-body sub { line-height: 0; }

/* quotation: a rule and a larger, quieter voice — no box */
.art--article .art-body blockquote { margin: var(--s-7) 0; padding: .1rem 0 .1rem var(--s-5); border-left: 2px solid var(--a-accent-2); font-size: 1.1875rem; line-height: 1.65; font-style: normal; font-weight: 450; color: var(--a-head); }
.art--article .art-body blockquote p:last-child { margin-bottom: 0; }
.art--article .art-body blockquote cite { display: block; margin-top: var(--s-3); font-size: var(--fs-small); font-style: normal; color: var(--a-muted); }

/* ---- 5. technical + media content: the "wide" level (≥1200px the column is 720, these are 800) ---------------------- */
.art--article .art-body figure, .art--article .art-body .wp-caption,
.art--article .art-body .art-table, .art--article .art-body .art-code, .art--article .art-body > pre,
.art--article .art-body .cc-video-embed, .art--article .art-body .cc-widget, .art--article .art-body .cc-diagram {
    margin-left: calc(var(--a-bleed) * -1); margin-right: calc(var(--a-bleed) * -1); max-width: none; width: auto;
}
.art--article .art-body figure, .art--article .art-body .wp-caption { margin-top: var(--s-7); margin-bottom: var(--s-7); }
.art--article .art-body img, .art--article .art-body video { display: block; max-width: 100%; height: auto; margin-left: auto; margin-right: auto; border-radius: var(--r-md); }
.art--article .art-body p > img { margin-top: var(--s-6); margin-bottom: var(--s-6); }
.art--article .art-body .wp-caption { width: auto !important; }
.art--article .art-body figcaption, .art--article .art-body .wp-caption-text, .art--article .art-body .image-credit { margin-top: var(--s-3); padding: 0 var(--a-bleed); font-size: var(--fs-small); line-height: 1.55; color: var(--a-muted); text-align: left; }
.art--article .art-body iframe { max-width: 100%; border: 0; border-radius: var(--r-md); }
.art--article .art-body .cc-video-embed { position: relative; aspect-ratio: 16 / 9; margin-top: var(--s-7); margin-bottom: var(--s-3); border: 0; border-radius: var(--r-md); overflow: hidden; background: #000; }
.art--article .art-body .cc-video-embed iframe, .art--article .art-body .cc-video-embed video { position: absolute; inset: 0; width: 100%; height: 100%; border-radius: 0; }
.art--article .art-body .cc-video-credit { margin: 0 0 var(--s-7); font-size: var(--fs-small); color: var(--a-muted); text-align: left; }

/* inline code */
.art--article .art-body code { padding: .12em .38em; border: 0; border-radius: var(--r-sm); background: var(--a-surface-2); font-family: var(--a-mono); font-size: .88em; color: #bfeff5; overflow-wrap: anywhere; }
.art--article .art-body a code { color: inherit; }
/* code blocks: one dark slab, scrolls sideways inside itself, copy button appears on hover / focus (always on touch) */
.art--article .art-body pre { max-width: 100%; margin: 0; padding: var(--s-5) max(var(--s-5), var(--a-bleed)); overflow-x: auto; border: 0; border-radius: var(--r-md); background: var(--a-code-bg); font-family: var(--a-mono); font-size: .9rem; line-height: 1.7; color: #d4def0; tab-size: 4; -webkit-overflow-scrolling: touch; }
.art--article .art-body > pre { margin-top: var(--s-6); margin-bottom: var(--s-6); }
.art--article .art-body pre code { padding: 0; background: none; font-size: inherit; color: inherit; white-space: pre; overflow-wrap: normal; text-shadow: none; }
.art--article .art-body .art-code { position: relative; margin-top: var(--s-6); margin-bottom: var(--s-6); }
.art--article .art-body .art-code pre { margin: 0; }
.art--article .art-code-copy { position: absolute; top: var(--s-2); right: var(--s-2); min-height: 32px; padding: .2rem .7rem; border: 1px solid var(--a-line-2); border-radius: var(--r-pill); background: rgba(7, 13, 25, .92); font: 600 .75rem var(--a-font); color: var(--a-text-2); cursor: pointer; opacity: 0; transition: opacity .15s, color .15s, border-color .15s; }
.art--article .art-code:hover .art-code-copy, .art--article .art-code-copy:focus-visible { opacity: 1; }
.art--article .art-code-copy:hover { color: var(--a-accent); border-color: var(--a-accent-line); }
@media (hover: none) { .art--article .art-code-copy { opacity: 1; } }

/* tables: hairlines only, header as a quiet caption row, scrolls inside its own wrapper */
.art--article .art-table { max-width: none; margin-top: var(--s-6); margin-bottom: var(--s-6); overflow-x: auto; border: 0; border-top: 1px solid var(--a-line-2); border-radius: 0; -webkit-overflow-scrolling: touch; }
.art--article .art-body table { width: 100%; margin: 0; border-collapse: collapse; font-size: .9688rem; line-height: 1.55; }
.art--article .art-body th, .art--article .art-body td { padding: var(--s-3) var(--s-4) var(--s-3) 0; text-align: left; vertical-align: top; border: 0; border-bottom: 1px solid var(--a-line); }
.art--article .art-body th { background: none; font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--a-muted); white-space: nowrap; border-bottom-color: var(--a-line-2); }
.art--article .art-body td:first-child { font-weight: 600; color: var(--a-head); }
.art--article .art-body th:first-child, .art--article .art-body td:first-child { padding-left: var(--a-bleed); }   /* the text lines up with the column, the hairlines run wide */
.art--article .art-body tbody tr:nth-child(even) td { background: none; }
.art--article .art-body tbody tr:hover td { background: var(--a-surface); }
.art--article .art-body tr:last-child td { border-bottom: 1px solid var(--a-line); }
.art--article .art-table:focus-visible, .art--article .art-body pre:focus-visible { outline-offset: 2px; }

/* callouts / technical notes: a rule and a faint tint — the only "box" in a story */
.art--article .art-body .callout, .art--article .art-body .note, .art--article .art-body .info, .art--article .art-body .important {
    margin: var(--s-6) 0; padding: var(--s-4) var(--s-5); border: 0; border-left: 2px solid var(--a-accent); border-radius: 0 var(--r-md) var(--r-md) 0; background: var(--a-surface); font-size: 1rem; line-height: 1.7; }
.art--article .art-body .callout > :last-child, .art--article .art-body .note > :last-child { margin-bottom: 0; }
.art--article .art-body .important, .art--article .art-body .callout.important { border-left-color: var(--a-accent-2); }
.art--article .art-body .note, .art--article .art-body .callout.note { border-left-color: var(--a-line-2); }

/* diagrams, network drawings, infographics: a figure with an SVG/picture, no frame */
.art--article .cc-diagram { margin-top: var(--s-7); margin-bottom: var(--s-7); }
.art--article .cc-diagram svg, .art--article .cc-diagram img { display: block; width: 100%; height: auto; border-radius: var(--r-md); }
.art--article .cc-diagram figcaption { margin-top: var(--s-3); font-size: var(--fs-small); color: var(--a-muted); }

/* ---- 6. interactive components (/preview + the future allow-listed component registry) -------------------------------
   Structure:  <figure class="cc-widget" data-cc-component="…">
                 <div class="cc-widget-head"><h3>…</h3><p>…</p></div>
                 <div class="cc-stage">…the visual…</div>
                 <div class="cc-controls">….cc-seg / .cc-btn / .cc-check…</div>
                 <p class="cc-status" role="status" aria-live="polite">…</p>
               </figure>
   One quiet surface for the stage; the rest sits straight on the page between two hairlines. */
.art--article .cc-widget { margin-top: var(--s-7); margin-bottom: var(--s-7); padding: 0; border: 0; }
/* the stage runs wide, the words around it line up with the text column */
.art--article .cc-widget-head, .art--article .cc-controls, .art--article .cc-status, .art--article .cc-choice-list, .art--article .cc-result { padding-left: var(--a-bleed); padding-right: var(--a-bleed); }
.art--article .cc-widget-head h3 { margin: 0; font-size: 1.125rem; font-weight: 650; color: var(--a-head); }
.art--article .cc-widget-head p { margin: var(--s-1) 0 0; font-size: var(--fs-small); line-height: 1.55; color: var(--a-muted); }
.art--article .cc-stage { position: relative; margin-top: var(--s-4); padding: var(--s-5); border-radius: var(--r-md); background: var(--a-surface); overflow: hidden; }
.art--article .cc-controls { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s-3) var(--s-5); margin-top: var(--s-4); }
.art--article .cc-field { display: flex; flex-direction: column; gap: var(--s-1); }
.art--article .cc-field > span { font-size: .75rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--a-muted); }
.art--article .cc-status { min-height: 1.5em; margin: var(--s-3) 0 0; font-size: var(--fs-small); line-height: 1.55; color: var(--a-text-2); }
/* segmented switch (aria-pressed buttons in a role=group) */
.art--article .cc-seg { display: inline-flex; padding: 3px; border-radius: var(--r-pill); background: var(--a-surface-2); }
.art--article .cc-seg button { white-space: nowrap; min-height: 40px; padding: 0 var(--s-4); border: 0; border-radius: var(--r-pill); background: transparent; font: 500 .875rem var(--a-font); color: var(--a-text-2); cursor: pointer; transition: background .15s, color .15s; touch-action: manipulation; }
.art--article .cc-seg button:hover { color: var(--a-head); }
.art--article .cc-seg button[aria-pressed="true"] { background: var(--a-head); color: #0a1020; font-weight: 650; }
/* buttons */
.art--article .cc-btn { min-height: 44px; padding: 0 var(--s-5); border: 1px solid var(--a-accent-line); border-radius: var(--r-pill); background: var(--a-accent-bg); font: 600 .9375rem var(--a-font); color: var(--a-accent); cursor: pointer; transition: background .15s, border-color .15s, transform .1s; touch-action: manipulation; }
.art--article .cc-btn:hover { background: rgba(94, 230, 242, .16); border-color: var(--a-accent); }
.art--article .cc-btn:active { transform: translateY(1px); }
.art--article .cc-btn:disabled { opacity: .5; cursor: default; }
.art--article .cc-btn--ghost { border-color: var(--a-line-2); background: transparent; color: var(--a-text-2); }
.art--article .cc-btn--ghost:hover { border-color: var(--a-text-2); background: var(--a-surface); }
.art--article .cc-check { display: inline-flex; align-items: center; gap: var(--s-2); min-height: 44px; font-size: var(--fs-small); color: var(--a-text-2); cursor: pointer; }
.art--article .cc-check input { width: 18px; height: 18px; margin: 0; accent-color: var(--a-accent); }

/* network / packet stage (TCP-UDP) */
.art--article .cc-net { --cc-in: 96px; position: relative; height: 260px; }
.art--article .cc-net-node { position: absolute; top: 0; width: 88px; text-align: center; font-size: .8125rem; font-weight: 600; color: var(--a-text-2); }
.art--article .cc-net-node b { display: block; margin-bottom: var(--s-1); font-size: 2rem; line-height: 1.3; }
.art--article .cc-net-node--from { left: 0; } .art--article .cc-net-node--to { right: 0; }
.art--article .cc-net-lane { position: absolute; left: var(--cc-in); right: var(--cc-in); top: 56px; border-top: 2px solid var(--a-line-2); }
.art--article .cc-net-lane--ack { top: 130px; border-top-style: dashed; border-color: rgba(94, 230, 242, .35); }
.art--article .cc-net-lane > span { position: absolute; left: 0; top: .5rem; font-size: .75rem; color: var(--a-muted); }
.art--article .cc-pkt { position: absolute; z-index: 2; top: 40px; left: var(--cc-in); display: grid; place-items: center; width: 40px; height: 32px; border-radius: var(--r-sm); background: #3d86f5; font-size: .8125rem; font-weight: 700; color: #fff; transition: left .55s linear, opacity .2s; }
.art--article .cc-pkt--ack { top: 114px; background: var(--a-accent); color: #04101f; font-size: .6875rem; }
.art--article .cc-pkt--lost { background: #e5484d; }
.art--article .cc-slots { position: absolute; left: 0; right: 0; bottom: 0; display: flex; justify-content: center; gap: var(--s-3); }
.art--article .cc-slot { display: grid; place-items: center; width: 38px; height: 38px; border-radius: var(--r-sm); background: var(--a-surface-2); font-size: .8125rem; font-weight: 700; color: var(--a-muted); }
.art--article .cc-slot--ok { background: rgba(61, 134, 245, .28); color: var(--a-head); }
.art--article .cc-slot--lost { background: rgba(229, 72, 77, .24); color: #ffb4b6; }
/* chooser (technology selector): a radiogroup of plain rows + the answer under a hairline */
.art--article .cc-choice-list { display: grid; gap: 2px; margin: 0; padding: 0; border: 0; }
.art--article .cc-choice { display: flex; align-items: center; gap: var(--s-3); min-height: 44px; padding: 0 var(--s-3); border-radius: var(--r-sm); font-size: 1rem; color: var(--a-text); cursor: pointer; transition: background .15s; }
.art--article .cc-choice:hover { background: var(--a-surface); }
.art--article .cc-choice:has(input:checked) { background: var(--a-accent-bg); }
.art--article .cc-choice input { width: 18px; height: 18px; margin: 0; accent-color: var(--a-accent); }
.art--article .cc-result { display: flex; gap: var(--s-3); margin-top: var(--s-4); padding-top: var(--s-4); border-top: 1px solid var(--a-line); }
.art--article .cc-result small { display: block; font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--a-muted); }
.art--article .cc-result strong { display: block; margin-top: 2px; font-size: 1.25rem; color: var(--a-head); }
.art--article .cc-result p { margin: var(--s-1) 0 0; font-size: .9688rem; color: var(--a-text-2); }
.art--article .cc-result::before { content: "✓"; flex: none; font-weight: 800; color: var(--a-accent); }

/* ---- 7. story footer, related, comments ------------------------------------------------------------------------- */
.art--article .art-foot { margin-top: var(--s-7); }
.art--article .art-foot > * { margin: 0; padding: var(--s-5) 0; border: 0; border-top: 1px solid var(--a-line); border-radius: 0; background: none; }
.art--article .art-foot h2 { margin: 0 0 var(--s-2); font-size: .75rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--a-muted); }
.art--article .art-sources ul { margin: 0; padding: 0; list-style: none; }
.art--article .art-sources li { padding: var(--s-1) 0; font-size: 1rem; color: var(--a-text-2); }
.art--article .art-sources a { color: var(--a-accent); text-decoration: underline; text-decoration-color: var(--a-accent-line); text-underline-offset: .22em; }
.art--article .art-sources a i { font-size: .8em; }
.art--article .article-reactions { gap: var(--s-3) var(--s-5); margin: 0; }
.art--article .article-reactions-label { font-size: var(--fs-small); font-weight: 600; color: var(--a-muted); }
.art--article .article-reactions-msg { min-height: 0; color: var(--a-text-2); }
.art--article .reaction-btn { min-height: 40px; padding: 0 var(--s-3); border-color: var(--a-line-2); background: transparent; color: var(--a-text); font-size: var(--fs-small); transform: none; }
.art--article .reaction-btn:hover { background: var(--a-accent-bg); border-color: var(--a-accent-line); transform: none; }
.art--article .reaction-btn.active { border-color: var(--a-accent); background: var(--a-accent-bg); color: var(--a-head); font-weight: 600; }
.art--article .art-byline { display: flex; align-items: center; margin: 0; }
.art--article .art-share { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s-2); }
.art--article .art-byline .art-share-label { display: inline; margin-right: var(--s-2); font-size: .75rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--a-muted); }
.art--article .art-share-btn { width: 40px; height: 40px; border-color: var(--a-line-2); color: var(--a-text-2) !important; }
.art--article .art-share-btn:hover { border-color: var(--a-accent-line); background: var(--a-accent-bg); color: var(--a-accent) !important; }
.art--article .art-share-copied { color: var(--a-accent); }
.art--article .art-author-card { display: flex; align-items: center; gap: var(--s-4); }
.art--article .art-avatar { flex: none; width: 52px; height: 52px; background: var(--a-accent-bg); color: var(--a-accent); font-size: 1rem; }
.art--article .art-author-card h2 { margin: 0; font-size: 1.0625rem; letter-spacing: 0; text-transform: none; color: var(--a-head); }
.art--article .art-author-card p { max-width: 50ch; margin: .15rem 0 0; font-size: .9375rem; line-height: 1.55; color: var(--a-muted); }

.art--article .art-h { display: flex; align-items: center; gap: var(--s-4); margin: 0 0 var(--s-5); font-size: .8125rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--a-muted); }
.art--article .art-h::before { display: none; }
.art--article .art-h::after { content: ""; flex: 1 1 auto; height: 1px; background: var(--a-line); }
.art--article .hw-related-art { margin-top: var(--s-8); }
.art--article .art-related { margin-top: var(--s-8); padding: 0; border: 0; }
.art--article .art-related-grid { gap: var(--s-6); }
.art--article .art-related-grid .mag-media { aspect-ratio: 16 / 9; border-radius: var(--r-md); background: #060b15; }
.art--article .art-related-grid .mag-media img { transition: transform .3s ease; }
.art--article .art-related-grid .mag-card:hover .mag-media img { transform: scale(1.03); }
.art--article .art-related-grid .mag-card-body { padding: var(--s-3) 0 0; }
.art--article .art-related-grid .mag-card-title { font-size: 1.125rem; font-weight: 600; line-height: 1.38; }
.art--article .art-comments-wrap { max-width: var(--a-main); margin-top: var(--s-8); padding: 0; border: 0; }
.art--article .art-comments { padding: 0; }
.art--article .art-comments #comments-list .text-muted { color: var(--a-muted) !important; }
.art--article .art-comment { padding: var(--s-4) 0; border-bottom: 1px solid var(--a-line); }
.art--article .art-comment strong { color: var(--a-head); }
.art--article .art-comment .when { margin-left: var(--s-3); font-size: .8125rem; color: var(--a-muted); }
.art--article .art-comment p { margin: var(--s-2) 0 0; line-height: 1.7; color: var(--a-text); }
.art--article .art-comment-form { margin-top: var(--s-6); padding: 0; border: 0; border-radius: 0; background: none; }
.art--article .art-comment-form label { margin-bottom: var(--s-1); font-size: var(--fs-small); font-weight: 600; color: var(--a-text-2); }
.art--article .art-comment-form .form-control { padding: var(--s-3) 0; border: 0; border-bottom: 1px solid var(--a-line-2); border-radius: 0; background: transparent; font-size: 1rem; color: var(--a-head); box-shadow: none; }
.art--article .art-comment-form .form-control::placeholder { color: var(--a-muted); opacity: 1; }
.art--article .art-comment-form .form-control:hover { border-bottom-color: var(--a-text-2); }
.art--article .art-comment-form .form-control:focus { border-bottom-color: var(--a-accent); background: transparent; box-shadow: none; outline: none; }
.art--article .art-comment-form .btn-send { min-height: 44px; margin-top: var(--s-3); padding: 0 var(--s-5); border: 1px solid var(--a-accent-line); border-radius: var(--r-pill); background: var(--a-accent-bg); font-weight: 600; color: var(--a-accent); transition: background .15s, border-color .15s; }
.art--article .art-comment-form .btn-send:hover { border-color: var(--a-accent); background: rgba(94, 230, 242, .16); }

/* ---- 8. reading progress + table of contents -------------------------------------------------------------------- */
.art-progress { position: fixed; z-index: 1100; top: 0; left: 0; right: 0; height: 2px; pointer-events: none; background: transparent; }
.art-progress > span { display: block; height: 100%; background: #5ee6f2; transform: scaleX(var(--p, 0)); transform-origin: 0 50%; }

.art--article .art-toc ol { margin: 0; padding: 0; list-style: none; }
.art--article .art-toc a { display: block; padding: .4rem 0 .4rem var(--s-4); margin-left: -1px; border-left: 2px solid transparent; font-size: .875rem; line-height: 1.45; color: var(--a-muted); transition: color .15s, border-color .15s; }
.art--article .art-toc a:hover { color: var(--a-text); }
.art--article .art-toc a[aria-current="true"] { border-left-color: var(--a-accent); color: var(--a-head); }
/* desktop rail: sticky inside the (full story height) sidebar, scrolls itself if the list is long */
.art--article .art-toc--rail { position: sticky; top: var(--a-sticky); max-height: calc(100vh - var(--a-sticky) - var(--s-5)); overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: var(--a-line-2) transparent; }
.art--article .art-toc--rail ol { border-left: 1px solid var(--a-line); }
/* phones / tablets: a collapsed <details> above the text */
.art--article .art-toc--inline { display: none; margin: 0 0 var(--s-6); border-top: 1px solid var(--a-line); border-bottom: 1px solid var(--a-line); }
.art--article .art-toc--inline summary { display: flex; align-items: center; justify-content: space-between; min-height: 48px; font-size: .875rem; font-weight: 650; color: var(--a-text); cursor: pointer; list-style: none; }
.art--article .art-toc--inline summary::-webkit-details-marker { display: none; }
.art--article .art-toc--inline summary::after { content: ""; width: 8px; height: 8px; margin-right: 4px; border-right: 2px solid var(--a-muted); border-bottom: 2px solid var(--a-muted); transform: rotate(45deg); transition: transform .2s; }
.art--article .art-toc--inline[open] summary::after { transform: rotate(-135deg); }
.art--article .art-toc--inline ol { padding-bottom: var(--s-3); }
.art--article .art-toc--inline a { min-height: 44px; display: flex; align-items: center; padding-left: 0; border-left: 0; font-size: .9688rem; }

/* ---- 9. responsive / motion / print ----------------------------------------------------------------------------- */
@media (max-width: 991.98px) {
    .art--article .art-layout { grid-template-columns: minmax(0, 1fr); }
    .art--article .art-main { max-width: var(--a-main); }
    .art--article .art-side { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-6) var(--s-7); margin-top: var(--s-7); padding-top: 0; }
    .art--article .art-side > * + * { margin-top: 0; }
    .art--article .art-side .ad-slot, .art--article .art-side .ad-placeholder { grid-column: 1 / -1; position: static; }
    .art--article .art-toc--rail { display: none; }
    .art--article .art-toc--inline { display: block; }
    .art--article .art-comments-wrap { max-width: var(--a-main); }
    .art--article .art-hero img { max-height: 56vh; }
}
@media (max-width: 767.98px) {
    .art--article .art-more { grid-template-columns: minmax(0, 1fr); gap: var(--s-7); }
}
@media (max-width: 575.98px) {
    body:has(.art--article) { background-image: linear-gradient(180deg, #05090f 0, #03070d 100%); }
    .art--article { --fs-body: 1.0625rem; --lh-body: 1.74; padding-bottom: var(--s-7); }
    .art--article .art-header { padding: var(--s-3) 0 var(--s-5); }
    .art--article .art-crumbs { margin-bottom: var(--s-4); }
    .art--article .art-crumbs a { display: inline-flex; align-items: center; min-height: 32px; }
    .art--article .art-hero { margin-bottom: var(--s-5); border-radius: var(--r-sm); }
    .art--article .art-hero img { border-radius: var(--r-sm); }
    .art--article .art-body h2 { margin-top: var(--s-7); }
    .art--article .art-body h3 { margin-top: var(--s-6); }
    .art--article .art-body blockquote { padding-left: var(--s-4); font-size: 1.125rem; }
    .art--article .art-body pre { padding: var(--s-4); font-size: .84rem; border-radius: var(--r-sm); }
    .art--article .art-side { grid-template-columns: minmax(0, 1fr); gap: var(--s-6); }
    .art--article .art-mini { padding: var(--s-3) 0; }
    .art--article .art-mini-thumb { flex-basis: 92px; }
    .art--article .art-related, .art--article .art-comments-wrap, .art--article .hw-related-art { margin-top: var(--s-7); }
    .art--article .art-related-grid { grid-template-columns: minmax(0, 1fr); }
    .art--article .art-related-grid > :nth-child(3) { display: block; }
    .art--article .art-share-btn { width: 44px; height: 44px; }
    .art--article .reaction-btn { min-height: 44px; }
    .art--article .cc-net { --cc-in: 80px; height: 236px; }
    .art--article .cc-net-node { width: 76px; font-size: .6875rem; }
    .art--article .cc-field { flex: 1 1 100%; }
    .art--article .cc-widget-head, .art--article .cc-controls, .art--article .cc-status, .art--article .cc-choice-list, .art--article .cc-result { padding-left: 0; padding-right: 0; }
    .art--article .cc-slots { gap: var(--s-2); }
    .art--article .cc-controls { gap: var(--s-4); }
    .art--article .cc-seg { display: flex; width: 100%; }
    .art--article .cc-seg button { flex: 1 1 0; padding: 0 var(--s-2); }
}
@media (prefers-reduced-motion: reduce) {
    .art--article *, .art--article *::before, .art--article *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
    .art--article .art-mini:hover .art-mini-thumb img, .art--article .art-related-grid .mag-card:hover .mag-media img { transform: none; }
    .art-progress > span { transition: none; }
}
@media print {
    body:has(.art--article) { background: #fff; }
    .art-progress, .art--article .art-side, .art--article .art-toc, .art--article .art-foot .art-share, .art--article .art-comments-wrap, .art--article .art-code-copy,
    .art--article .article-reactions, .art--article .art-ad, .art--article .art-more { display: none !important; }
    .art--article, .art--article .art-body, .art--article .art-body p, .art--article .art-body li { color: #111; }
    .art--article .art-title, .art--article .art-body h2, .art--article .art-body h3, .art--article .art-body strong { color: #000; }
    .art--article .art-body pre { background: #f4f4f4; color: #111; border: 1px solid #ccc; }
    .art--article .art-body figure, .art--article .art-table, .art--article .art-code { margin-left: 0; margin-right: 0; }
}