/* ==========================================================================
   05 / ctf: section, reader and pre-rendered write-up pages.
   Reuses the tokens from styles.css (:root). Only syntax-highlight / difficulty
   colours are added here, scoped to these components.
   ========================================================================== */
.ctf, .ctf-reader, .wu-page {
  --syn-str: #f2c879;
  --syn-num: #c9a9ff;
  --syn-reg: #ff9fb8;
  --syn-var: #8fd3ff;
  --syn-com: #8a98ab;
  --code-bg: #090d13;
  --ctf-warn: #f2c879;
  --ctf-hard: #ff8fa3;
}

.ctf { position: relative; isolation: isolate; }
.ctf-bg { position: absolute; top: 0; bottom: 0; left: 50%; width: 100vw; translate: -50% 0; z-index: -1; overflow: hidden; pointer-events: none;
  -webkit-mask-image: linear-gradient(transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(transparent, #000 12%, #000 88%, transparent); }
.ctf-bg canvas { display: block; width: 100%; height: 100%; }

/* ---------- intro: terminal + disk ---------- */
.ctf-intro { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-8); align-items: center; margin-bottom: var(--space-12); }
@media (min-width: 900px) { .ctf-intro { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: var(--space-12); } }
.ctf-term { font-family: var(--font-mono); font-size: 0.95rem; max-width: 30rem; padding: var(--space-6); border: 1px solid var(--line); border-radius: 16px; background: rgba(8, 12, 17, 0.72); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.ctf-term p { margin: 0; max-width: none; }
.ctf-cmd { color: var(--text); min-height: 1.65em; }
.ctf-out { margin-top: var(--space-2) !important; color: var(--text-muted); padding-left: 1.1em; }
.ctf-out[hidden] { display: none; }
.ctf-count { color: var(--green); font-weight: 700; font-variant-numeric: tabular-nums; }
.ctf-legend { margin-top: var(--space-6); display: grid; gap: var(--space-2); font-size: 0.78rem; color: var(--text-muted); }
.ctf-legend li { display: flex; align-items: center; gap: 0.7em; }
.ctf-legend .ctf-swatch { flex: none; opacity: 0.9; }
.ctf-legend-link { color: var(--text); text-decoration: none; min-height: 28px; display: inline-flex; align-items: center; }
.ctf-legend-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.ctf-legend-cat { color: var(--text-muted); white-space: pre; }
.ctf-swatch { width: 14px; height: 14px; border-radius: 4px; border: 1px solid; }
.ctf-swatch-vault { border-color: var(--green); background: rgba(52, 245, 165, 0.25); box-shadow: 0 0 12px rgba(52, 245, 165, 0.4); }
.ctf-swatch-efi { border-color: var(--cyan); background: rgba(56, 214, 239, 0.25); box-shadow: 0 0 12px rgba(56, 214, 239, 0.4); }

.ctf-stage { position: relative; width: 100%; height: clamp(260px, 36vw, 440px); }
.ctf-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; opacity: 0; transition: opacity 1.2s var(--ease); }
.ctf-has-3d .ctf-stage canvas { opacity: 1; }
.ctf-has-3d .ctf-disk-fallback { opacity: 0; visibility: hidden; }

/* CSS-only disk (default, and the fallback for small / low-power / no-WebGL) */
.ctf-disk-fallback { position: absolute; inset: 0; display: grid; place-items: center; perspective: 900px; transition: opacity 0.8s var(--ease); }
.ctf-disk-fallback i { position: absolute; width: min(70%, 380px); aspect-ratio: 1; border-radius: 50%; transform: rotateX(62deg); }
.ctf-disk-fallback i:nth-child(1) { border: 1px solid rgba(150, 163, 181, 0.5); background: radial-gradient(circle, rgba(52, 245, 165, 0.1), transparent 70%); }
.ctf-disk-fallback i:nth-child(2) {
  width: min(58%, 310px);
  background: conic-gradient(var(--green) 0 92%, transparent 92% 100%);
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 26px), #000 calc(100% - 25px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 26px), #000 calc(100% - 25px));
  opacity: 0.5; filter: drop-shadow(0 0 10px rgba(52, 245, 165, 0.7));
  animation: ctf-spin 40s linear infinite;
}
.ctf-disk-fallback i:nth-child(3) {
  width: min(32%, 170px);
  background: conic-gradient(var(--cyan) 0 25%, rgba(56, 214, 239, 0.25) 25% 100%);
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 20px), #000 calc(100% - 19px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 20px), #000 calc(100% - 19px));
  animation: ctf-spin 9s linear infinite reverse;
}
@keyframes ctf-spin { to { rotate: 360deg; } }

/* ---------- filters ---------- */
.ctf-filters { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-8); }
.ctf-filters[hidden] { display: none; }
.ctf-chips { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.ctf-fchip { display: inline-flex; align-items: center; gap: 0.5em; min-height: 40px; padding: 0 var(--space-4); border-radius: 999px; border: 1px solid var(--line-strong); background: rgba(255, 255, 255, 0.03); color: var(--text-muted); font: 0.8rem var(--font-mono); cursor: pointer; transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast); }
.ctf-fchip:hover { color: var(--text); border-color: rgba(52, 245, 165, 0.45); }
.ctf-fchip[aria-pressed="true"] { color: var(--green); border-color: var(--green); background: var(--green-dim); }
.ctf-fcount { font-size: 0.7rem; opacity: 0.8; }
.ctf-search { position: relative; display: flex; align-items: center; color: var(--text-muted); }
.ctf-search svg { position: absolute; left: 12px; pointer-events: none; }
.ctf-search input { width: min(100%, 17rem); min-height: 40px; padding: 0 var(--space-4) 0 38px; border-radius: 999px; border: 1px solid var(--line-strong); background: rgba(255, 255, 255, 0.03); color: var(--text); font: 0.85rem var(--font-mono); }
.ctf-search input::placeholder { color: var(--text-muted); opacity: 1; }
.ctf-search input:focus-visible { border-color: var(--cyan); outline-offset: 2px; }
.ctf-nomatch { padding: var(--space-6); border: 1px dashed var(--line-strong); border-radius: 16px; color: var(--text-muted); }
.ctf-nomatch[hidden] { display: none; }
.ctf-linkbtn { background: none; border: 0; padding: 0; color: var(--green); font: inherit; text-decoration: underline; cursor: pointer; }

/* ---------- chips shared by cards and reader ---------- */
.ctf-chip { display: inline-flex; align-items: center; font: 0.74rem var(--font-mono); padding: 0.22rem 0.7rem; border-radius: 999px; border: 1px solid var(--line-strong); color: var(--text-muted); text-transform: lowercase; }
.ctf-chip-cat { color: var(--cyan); border-color: rgba(56, 214, 239, 0.4); }
.ctf-pts { color: var(--green); border-color: rgba(52, 245, 165, 0.4); }
.ctf-diff-easy { color: var(--green); border-color: rgba(52, 245, 165, 0.4); }
.ctf-diff-medium { color: var(--ctf-warn); border-color: rgba(242, 200, 121, 0.45); }
.ctf-diff-hard, .ctf-diff-insane { color: var(--ctf-hard); border-color: rgba(255, 143, 163, 0.45); }
.ctf-tools { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.ctf-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.ctf-tag { font: 0.74rem var(--font-mono); padding: 0.18rem 0.6rem; border-radius: 999px; border: 1px dashed var(--line-strong); color: var(--text-muted); }
.ctf-tag::before { content: "#"; color: var(--green); margin-right: 0.15em; }
.ctf-tool { font: 0.76rem var(--font-mono); padding: 0.2rem 0.65rem; border-radius: 6px; background: rgba(255, 255, 255, 0.05); color: var(--text); }

/* ---------- event cards ---------- */
.ctf-events { display: grid; gap: var(--space-6); }
.ctf-event { border: 1px solid var(--line); border-radius: 22px; background: linear-gradient(150deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01)); transition: border-color var(--t-base) var(--ease); }
.ctf-event[hidden] { display: none; }
.ctf-event.is-open { border-color: rgba(52, 245, 165, 0.28); }
.ctf-event-title { margin: 0; font-size: inherit; letter-spacing: 0; line-height: inherit; }
.ctf-face {
  position: relative; display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); width: 100%; min-height: 8rem; padding: var(--space-8);
  border: 0; border-radius: 22px; background: transparent; color: var(--text); text-align: left; cursor: pointer; overflow: hidden; font: inherit;
  transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(0);
  transition: transform 260ms ease-out, box-shadow var(--t-base) var(--ease);
  transform-style: preserve-3d;
}
.ctf-face:hover, .ctf-face:focus-visible { transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(-3px); box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(52, 245, 165, 0.25); }
.ctf-face:focus-visible { outline-offset: -3px; }
.ctf-shine { position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity var(--t-base); background: radial-gradient(380px circle at var(--mx, 50%) var(--my, 50%), rgba(255, 255, 255, 0.11), rgba(52, 245, 165, 0.07) 40%, transparent 65%); }
.ctf-face:hover .ctf-shine, .ctf-face:focus-visible .ctf-shine { opacity: 1; }
.ctf-face-main { display: grid; gap: var(--space-3); position: relative; transform: translateZ(18px); }
.ctf-event-date { font: 0.8rem var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--cyan); }
.ctf-event-name { font-size: clamp(1.4rem, 3vw, 2.2rem); font-weight: 650; line-height: 1.1; letter-spacing: -0.03em; }
.ctf-event-cats { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.ctf-face-side { position: relative; display: flex; align-items: center; gap: var(--space-4); flex: none; font: 0.82rem var(--font-mono); color: var(--text-muted); transform: translateZ(12px); }
.ctf-event-rank { color: var(--green); }
.ctf-chev { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line-strong); color: var(--green); transition: transform var(--t-base) var(--ease), background var(--t-fast); }
.ctf-face:hover .ctf-chev { background: var(--green-dim); }
.ctf-event.is-open .ctf-chev { transform: rotate(180deg); }
@media (max-width: 599px) { .ctf-face { flex-direction: column; align-items: flex-start; padding: var(--space-6); } }

.ctf-event-body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 520ms var(--ease); }
.ctf-event.is-open .ctf-event-body { grid-template-rows: 1fr; }
.ctf-event-inner { overflow: hidden; min-height: 0; visibility: hidden; transition: visibility 0s 520ms; }
.ctf-event.is-open .ctf-event-inner { visibility: visible; transition-delay: 0s; }
.ctf-wu-list { display: grid; gap: var(--space-4); padding: 0 var(--space-6) var(--space-6); grid-template-columns: repeat(auto-fill, minmax(min(100%, 22rem), 1fr)); }
.ctf-event-empty { margin: 0; padding: 0 var(--space-8) var(--space-8); color: var(--text-muted); }

/* ---------- write-up cards ---------- */
.ctf-wu { display: flex; flex-direction: column; gap: var(--space-4); padding: var(--space-6); border: 1px solid var(--line); border-radius: 16px; background: rgba(5, 7, 10, 0.55); transition: border-color var(--t-base) var(--ease), transform var(--t-base) var(--ease); }
.ctf-wu[hidden] { display: none; }
.ctf-wu:hover, .ctf-wu:focus-within { border-color: rgba(52, 245, 165, 0.4); transform: translateY(-3px); }
.ctf-wu-head { display: flex; align-items: center; gap: var(--space-4); }
.ctf-wu-icon { display: inline-grid; place-items: center; flex: none; width: 46px; height: 46px; border-radius: 12px; color: var(--green); border: 1px solid rgba(52, 245, 165, 0.35); background: var(--green-dim); }
.ctf-wu-title { font-size: 1.45rem; letter-spacing: -0.02em; line-height: 1.15; }
.ctf-wu-meta { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.ctf-wu-summary { margin: 0; color: var(--text-muted); }
.ctf-read { margin-top: auto; align-self: flex-start; min-height: 46px; padding-inline: var(--space-6); font-size: 0.85rem; }
.ctf-read:hover .btn-arrow { transform: translateX(4px); }

/* staggered reveal (only while JS runs) */
.js .ctf-rv { opacity: 0; translate: 0 26px; transition: opacity 800ms var(--ease) var(--d, 0s), translate 800ms var(--ease) var(--d, 0s), border-color var(--t-base) var(--ease), transform var(--t-base) var(--ease); }
.js .ctf-rv.is-in { opacity: 1; translate: 0 0; }

/* ==========================================================================
   Reader
   ========================================================================== */
body.ctf-reading { overflow: hidden; }
.ctf-reader {
  position: fixed; inset: 0; z-index: 300; overflow-y: auto; overscroll-behavior: contain; background: var(--bg);
  background-image: radial-gradient(60vmax 40vmax at 90% 0%, rgba(56, 214, 239, 0.07), transparent 65%), radial-gradient(55vmax 40vmax at 0% 60%, rgba(52, 245, 165, 0.06), transparent 65%);
  opacity: 0; transform-origin: var(--ox, 50%) var(--oy, 50%);
  transform: perspective(1600px) translate3d(0, 0, -320px) rotateX(10deg) scale(0.9);
  transition: opacity 420ms var(--ease), transform 560ms var(--ease);
  scroll-behavior: auto;
}
.ctf-reader[hidden] { display: none; }
.ctf-reader.is-open { opacity: 1; transform: none; }
.ctf-r-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 3; transform: scaleX(0); transform-origin: left; background: linear-gradient(90deg, var(--green), var(--cyan)); }
.ctf-r-bar { position: sticky; top: 0; z-index: 2; background: rgba(5, 7, 10, 0.82); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.ctf-r-bar-in { display: flex; align-items: center; gap: var(--space-4); min-height: 60px; }
.ctf-r-back { display: inline-flex; align-items: center; gap: 0.6em; min-height: 44px; padding: 0 var(--space-4); border-radius: 999px; border: 1px solid rgba(52, 245, 165, 0.5); background: transparent; color: var(--green); font: 600 0.85rem var(--font-mono); cursor: pointer; transition: background var(--t-fast), color var(--t-fast); }
.ctf-r-back:hover { background: var(--green); color: var(--on-accent); }
.ctf-r-crumb { margin: 0; font: 0.75rem var(--font-mono); color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.ctf-r-time { margin: 0 0 0 auto; font: 0.78rem var(--font-mono); color: var(--cyan); white-space: nowrap; }
@media (max-width: 640px) { .ctf-r-crumb { display: none; } }

.ctf-r-wrap { padding-block: var(--space-12) var(--space-24); }
.ctf-r-head { max-width: 62rem; margin-bottom: var(--space-12); display: grid; gap: var(--space-4); justify-items: start; }
.ctf-r-eyebrow { margin: 0; font: 0.8rem var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.ctf-r-title { font-size: clamp(2.4rem, 7vw, 5rem); letter-spacing: -0.04em; outline: none; }
.ctf-r-source { margin-top: var(--space-2); }
.ctf-r-loading { color: var(--text-muted); font-family: var(--font-mono); }

.ctf-r-layout { display: block; }
@media (min-width: 960px) { .ctf-r-layout { display: grid; grid-template-columns: 15rem minmax(0, 1fr); gap: var(--space-12); align-items: start; } }
.ctf-r-toc { margin-bottom: var(--space-8); }
.ctf-r-toc[hidden] { display: none; }
@media (min-width: 960px) { .ctf-r-toc { position: sticky; top: 84px; margin-bottom: 0; max-height: calc(100vh - 110px); } }
.ctf-toc-details { border: 1px solid var(--line); border-radius: 14px; background: rgba(255, 255, 255, 0.025); }
.ctf-toc-title { padding: var(--space-3) var(--space-4); font: 600 0.78rem var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--cyan); cursor: pointer; min-height: 44px; display: flex; align-items: center; }
.ctf-r-toc.is-wide .ctf-toc-title { cursor: default; pointer-events: none; }
.ctf-r-toc.is-wide .ctf-toc-title::marker, .ctf-r-toc.is-wide .ctf-toc-title::-webkit-details-marker { content: ""; display: none; }
.ctf-toc-list { padding: 0 var(--space-2) var(--space-3); max-height: 70vh; overflow-y: auto; }
@media (min-width: 960px) { .ctf-toc-list { max-height: calc(100vh - 190px); } }
.ctf-toc-list a { display: block; padding: 0.38rem var(--space-3); border-left: 2px solid transparent; border-radius: 0 6px 6px 0; color: var(--text-muted); text-decoration: none; font-size: 0.82rem; line-height: 1.35; transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast); }
.ctf-toc-l3 a { padding-left: var(--space-6); font-size: 0.78rem; }
.ctf-toc-list a:hover { color: var(--text); }
.ctf-toc-list a.is-active { color: var(--green); border-left-color: var(--green); background: var(--green-dim); }

/* Pager */
.ctf-r-pager { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-16); padding-top: var(--space-8); border-top: 1px solid var(--line); }
.ctf-r-pager[hidden] { display: none; }
.ctf-r-pg { flex: 1 1 16rem; display: grid; gap: 0.2rem; padding: var(--space-4) var(--space-6); border: 1px solid var(--line); border-radius: 14px; color: var(--text); text-decoration: none; transition: border-color var(--t-fast), background var(--t-fast); }
.ctf-r-pg:hover { border-color: var(--green); background: var(--green-dim); }
.ctf-r-pg-next { text-align: right; }
.ctf-r-pg-dir { font: 0.74rem var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--cyan); }
.ctf-r-pg-name { font-size: 1.15rem; font-weight: 600; }

/* ==========================================================================
   Markdown content (reader + pre-rendered pages)
   ========================================================================== */
.ctf-md { min-width: 0; max-width: 56rem; color: var(--text); overflow-wrap: break-word; }
.ctf-md > :first-child { margin-top: 0; }
.ctf-md p, .ctf-md li { max-width: 72ch; }
.ctf-md p { margin: 0 0 var(--space-4); color: var(--text); }
.ctf-md h2 { margin: var(--space-16) 0 var(--space-4); font-size: clamp(1.7rem, 4vw, 2.5rem); letter-spacing: -0.03em; padding-top: var(--space-6); border-top: 1px solid var(--line); outline: none; }
.ctf-md h2::before { content: "## "; font-family: var(--font-mono); font-weight: 400; color: var(--green); opacity: 0.7; }
.ctf-md h3 { margin: var(--space-12) 0 var(--space-3); font-size: clamp(1.25rem, 2.6vw, 1.65rem); letter-spacing: -0.02em; outline: none; }
.ctf-md h3::before { content: "### "; font-family: var(--font-mono); font-weight: 400; color: var(--cyan); opacity: 0.7; }
.ctf-md h2:focus-visible, .ctf-md h3:focus-visible { outline: 2px solid var(--cyan); outline-offset: 6px; }
.ctf-md ul, .ctf-md ol { margin: 0 0 var(--space-4); padding-left: 1.4rem; }
.ctf-md ul { list-style: disc; }
.ctf-md ol { list-style: decimal; }
.ctf-md li { margin-bottom: var(--space-2); padding-left: 0.2rem; }
.ctf-md li::marker { color: var(--green); }
.ctf-md a { color: var(--green); text-underline-offset: 3px; }
.ctf-md a:hover { color: var(--cyan); }
.ctf-md strong { color: #fff; }
.ctf-md blockquote { margin: var(--space-6) 0; padding: var(--space-4) var(--space-6); border-left: 3px solid var(--cyan); background: rgba(56, 214, 239, 0.06); border-radius: 0 12px 12px 0; }
.ctf-md blockquote p:last-child { margin-bottom: 0; }
.ctf-md hr { border: 0; border-top: 1px solid var(--line); margin: var(--space-12) 0; }
.ctf-md code { color: var(--cyan); }
.ctf-md pre code, .ctf-md .ctf-code code { color: inherit; background: none; padding: 0; font-size: inherit; }

.ctf-table { margin: var(--space-6) 0; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
.ctf-md table { width: 100%; border-collapse: collapse; font-size: 0.9rem; min-width: 30rem; }
.ctf-md th, .ctf-md td { padding: var(--space-3) var(--space-4); text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.ctf-md th[align="center"], .ctf-md td[align="center"] { text-align: center; }
.ctf-md th[align="right"], .ctf-md td[align="right"] { text-align: right; }
.ctf-md thead th { font: 600 0.76rem var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--cyan); background: rgba(255, 255, 255, 0.03); }
.ctf-md tbody tr:last-child td { border-bottom: 0; }
.ctf-md tbody tr:hover td { background: rgba(255, 255, 255, 0.02); }

/* ---------- code blocks ---------- */
.ctf-code { margin: var(--space-6) 0; border: 1px solid var(--line); border-radius: 12px; background: var(--code-bg); overflow: hidden; }
.ctf-code-bar { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: 0.3rem var(--space-3) 0.3rem var(--space-4); border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, 0.03); }
.ctf-code-lang { font: 0.72rem var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.ctf-code-actions { display: inline-flex; gap: var(--space-2); }
.ctf-code-btn { min-height: 34px; padding: 0 var(--space-3); border-radius: 8px; border: 1px solid var(--line-strong); background: transparent; color: var(--text); font: 0.76rem var(--font-mono); cursor: pointer; transition: border-color var(--t-fast), color var(--t-fast), background var(--t-fast); }
.ctf-code-btn:hover { border-color: var(--cyan); color: var(--cyan); }
.ctf-code-btn[aria-pressed="true"] { border-color: var(--green); color: var(--green); background: var(--green-dim); }
.ctf-code-btn.is-done { border-color: var(--green); color: var(--green); }
.ctf-pre { margin: 0; padding: var(--space-4); overflow-x: auto; font: 0.84rem/1.65 var(--font-mono); tab-size: 4; color: var(--text); }
.ctf-pre:focus-visible { outline-offset: -3px; }
.ctf-code.is-wrapped .ctf-pre { white-space: pre-wrap; overflow-wrap: anywhere; }
.tok-kw { color: var(--green); }
.tok-fn { color: var(--cyan); }
.tok-str { color: var(--syn-str); }
.tok-num { color: var(--syn-num); }
.tok-com { color: var(--syn-com); font-style: italic; }
.tok-var { color: var(--syn-var); }
.tok-opt { color: var(--syn-num); }
.tok-reg { color: var(--syn-reg); }
.tok-type { color: var(--syn-com); }
.tok-key { color: var(--syn-var); }
.tok-op { color: var(--text-muted); }
.tok-prompt { color: var(--green); font-weight: 700; }
.tok-out { color: var(--text-muted); }
.ctf-offscreen { position: fixed; left: -9999px; top: 0; }

/* ---------- spoiler flags ---------- */
.ctf-flag { position: relative; display: inline-block; max-width: 100%; padding: 0 0.35em; border-radius: 6px; border: 1px dashed rgba(52, 245, 165, 0.55); background: var(--green-dim); color: var(--green); font: inherit; line-height: inherit; text-align: left; cursor: pointer; vertical-align: baseline; overflow-wrap: anywhere; }
.ctf-flag:hover { background: rgba(52, 245, 165, 0.16); }
.ctf-flag-text { filter: blur(6px); transition: filter 500ms var(--ease); user-select: none; -webkit-user-select: none; }
.ctf-flag-hint { position: absolute; inset: 0; display: grid; place-items: center; font: 600 0.62rem var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: #fff; text-shadow: 0 0 6px #000, 0 0 3px #000; pointer-events: none; }
.ctf-flag.is-revealed { cursor: text; border-style: solid; background: rgba(52, 245, 165, 0.12); }
.ctf-flag.is-revealed .ctf-flag-text { filter: none; user-select: text; -webkit-user-select: text; }
.ctf-flag.is-revealed .ctf-flag-hint { display: none; }
.tok-flag { display: inline; }
/* no-JS pre-rendered pages: hover / focus reveals */
.flag-nojs { display: inline; padding: 0 0.3em; border-radius: 6px; border: 1px dashed rgba(52, 245, 165, 0.55); filter: blur(5px); transition: filter 300ms; cursor: help; }
.flag-nojs:hover, .flag-nojs:focus { filter: none; }

/* ==========================================================================
   Pre-rendered pages (writeups/<event>/<slug>/index.html, no JS)
   ========================================================================== */
.wu-page .wu-bar { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4); padding-block: var(--space-6); }
.wu-page .wu-bar a { min-height: 44px; display: inline-flex; align-items: center; font-family: var(--font-mono); font-size: 0.85rem; }
.wu-page .wu-head { margin: var(--space-8) 0 var(--space-12); display: grid; gap: var(--space-4); justify-items: start; }
.wu-page .wu-head h1 { font-size: clamp(2.4rem, 7vw, 5rem); letter-spacing: -0.04em; }
.wu-page .wu-head p { margin: 0; }
.wu-page .wu-layout { padding-bottom: var(--space-24); }
.wu-page .wu-toc { margin-bottom: var(--space-8); border: 1px solid var(--line); border-radius: 14px; padding: var(--space-4); }
.wu-page .wu-toc ol { display: grid; gap: var(--space-1); }
.wu-page .wu-toc a { display: inline-flex; align-items: center; min-height: 32px; color: var(--text-muted); font-size: 0.85rem; text-decoration: none; }
.wu-page .wu-toc .ctf-toc-l3 { padding-left: var(--space-4); }
.wu-page .wu-toc a:hover { color: var(--green); }
.wu-page .wu-note { font: 0.8rem var(--font-mono); color: var(--text-muted); }
.wu-page .wu-list { display: grid; gap: var(--space-4); margin-top: var(--space-8); }
.wu-page .wu-list a { color: var(--text); text-decoration: none; display: grid; gap: 0.3rem; padding: var(--space-4) var(--space-6); border: 1px solid var(--line); border-radius: 14px; }
.wu-page .wu-list a:hover { border-color: var(--green); }

/* ==========================================================================
   Reduced motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  .js .ctf-rv { opacity: 1; translate: 0 0; }
  .ctf-face, .ctf-face:hover, .ctf-face:focus-visible { transform: none !important; }
  .ctf-wu:hover, .ctf-wu:focus-within { transform: none; }
  .ctf-disk-fallback i { animation: none !important; }
  .ctf-reader { transform: none !important; transition: opacity 160ms linear !important; }
  .ctf-event-body, .ctf-event-inner { transition: none !important; }
  .ctf-flag-text { transition: none; }
}