/*
 * kyun.si components: "GRID"
 *
 * Layer 2 of the framework. Reads tokens only. Class names use the `mk-`
 * prefix and BEM-style modifiers. Per-instance values (a project's --hue,
 * an entrance index --i) arrive as custom properties, never ad-hoc styles.
 */

/* ---- Base ----------------------------------------------------------- */

[hidden] {
  display: none !important;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--void);
  color: var(--fg-1);
  font-family: var(--font-sans);
  font-size: var(--text-md);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
}

/* CRT scanlines over everything; purely visual. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  pointer-events: none;
  background: var(--scanlines);
}

a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

::selection {
  background: var(--signal);
  color: var(--on-signal);
}

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

.mk-visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.mk-skip {
  position: absolute;
  left: var(--s-4);
  top: -100px;
  z-index: var(--z-overlay);
  padding: var(--s-2) var(--s-4);
  background: var(--signal);
  color: var(--on-signal);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.mk-skip:focus {
  top: var(--s-2);
}

/* HUD label: mono caps, the "instrument" voice. */
.mk-label {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--fg-3);
}

.mk-label--signal {
  color: var(--signal);
  text-shadow: var(--glow-text);
}

.mk-container {
  width: 100%;
  max-width: calc(var(--page-max) + 2 * var(--page-gutter));
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

/* ---- Bar ------------------------------------------------------------ */

.mk-bar {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-bar);
  height: var(--bar-height);
  border-bottom: var(--hairline) solid transparent;
  transition: background var(--dur-2), border-color var(--dur-2);
}

.mk-bar[data-scrolled] {
  background: oklch(0.11 0.014 235 / 0.78);
  border-bottom-color: var(--line-2);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.mk-bar__inner {
  display: flex;
  align-items: center;
  gap: var(--s-6);
  height: 100%;
}

.mk-wordmark {
  display: inline-flex;
  flex: none;
  align-items: center;
  gap: var(--s-3);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: var(--tracking-mark);
  text-shadow: var(--glow-text);
}

/* The mark: a tiny identity disc. */
.mk-wordmark__mark {
  position: relative;
  width: 18px;
  height: 18px;
  border: 2px solid var(--signal);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--signal), inset 0 0 6px var(--signal);
}

.mk-wordmark__mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--signal);
}

.mk-wordmark__tld {
  color: var(--signal);
}

.mk-bar__nav {
  display: flex;
  gap: var(--s-6);
  margin-left: auto;
}

.mk-bar__nav a {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--fg-2);
  transition: color var(--dur-1), text-shadow var(--dur-1);
}

.mk-bar__nav a:hover {
  color: var(--fg-1);
  text-shadow: var(--glow-text);
}

.mk-bar__tools {
  display: flex;
  align-items: center;
  flex: none;
  gap: var(--s-3);
}

.mk-lang {
  display: inline-flex;
  flex: none;
  border: 1px solid var(--line-2);
}

.mk-lang button {
  min-width: 2.75rem;
  height: 2.75rem;
  padding: 0 0.55rem;
  border: 0;
  background: transparent;
  color: var(--fg-3);
  font-family: "Geist", "PingFang SC", "PingFang TC", "Noto Sans SC", "Noto Sans TC", sans-serif;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  cursor: pointer;
}

.mk-lang button[aria-pressed="true"] {
  background: var(--signal-dim);
  color: var(--signal);
}

.mk-lang button:hover {
  color: var(--fg-1);
}

.mk-lang-select {
  display: none;
  width: 4rem;
  min-height: 2.75rem;
  padding-inline: var(--s-2);
  border: 1px solid var(--line-2);
  border-radius: 0;
  color: var(--fg-1);
  background: var(--bg-1-solid);
  font: inherit;
  font-size: var(--text-sm);
}

@media (max-width: 40rem) {
  .mk-bar__inner {
    gap: var(--s-3);
  }
  .mk-bar__nav {
    display: none;
  }
  .mk-bar__tools {
    margin-left: auto;
    gap: var(--s-2);
  }
  .mk-lang {
    display: none;
  }
  .mk-lang-select {
    display: block;
  }
  .mk-bar__tools .mk-btn {
    height: 2.75rem;
    padding-inline: var(--s-3);
  }
  .mk-bar__tools .mk-kbd {
    display: none;
  }
  .mk-wordmark {
    gap: var(--s-2);
    letter-spacing: 0.08em;
  }
}

/* ---- Buttons -------------------------------------------------------- */

.mk-btn {
  --cut: var(--cut-sm);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  min-height: 2.75rem;
  padding: 0 var(--s-4);
  white-space: nowrap;
  border: 0;
  background: transparent;
  color: var(--fg-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  cursor: pointer;
  isolation: isolate;
  transition: color var(--dur-1), filter var(--dur-2);
}

/* Border + fill drawn by two chamfered layers. */
.mk-btn::before,
.mk-btn::after {
  content: "";
  position: absolute;
  z-index: -1;
  clip-path: polygon(
    var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut)
  );
}

.mk-btn::before {
  inset: 0;
  background: var(--line-3);
}

.mk-btn::after {
  inset: 1px;
  background: var(--bg-1-solid);
  transition: background var(--dur-1);
}

.mk-btn:hover {
  filter: drop-shadow(0 0 8px oklch(0.88 0.13 205 / 0.5));
}

.mk-btn:hover::before {
  background: var(--signal);
}

.mk-btn:hover::after {
  background: oklch(0.2 0.04 220);
}

.mk-btn--primary {
  color: var(--on-signal);
  font-weight: 700;
}

.mk-btn--primary::before,
.mk-btn--primary::after {
  background: var(--signal);
}

.mk-btn--primary:hover::after {
  background: oklch(0.94 0.1 205);
}

.mk-btn svg {
  width: 14px;
  height: 14px;
  flex: none;
}

.mk-kbd {
  padding: 1px 6px;
  border: var(--hairline) solid var(--line-2);
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: 0.04em;
  color: var(--fg-3);
}

/* ---- Hero: the Grid -------------------------------------------------- */

.mk-hero {
  position: relative;
  display: grid;
  grid-template-rows: 1fr;
  min-height: max(40rem, 100svh);
  overflow: hidden;
  isolation: isolate;
}

.mk-hero__canvas,
.mk-hero__floor,
.mk-hero__labels {
  position: absolute;
  inset: 0;
}

.mk-hero__canvas {
  z-index: -1;
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0;
  transition: opacity 900ms var(--ease-out);
}

.mk-hero[data-grid="ready"] .mk-hero__canvas {
  opacity: 1;
}

.mk-hero[data-grid="ready"] .mk-hero__canvas.is-hot {
  cursor: pointer;
}

/* CSS fallback / pre-load floor: a perspective grid rushing forward. */
.mk-hero__floor {
  z-index: -2;
  overflow: hidden;
  perspective: 420px;
  background:
    radial-gradient(ellipse 60% 40% at 50% 58%, oklch(0.88 0.13 205 / 0.16), transparent 70%),
    linear-gradient(180deg, var(--void) 0 45%, oklch(0.14 0.03 225) 58%, var(--void));
  transition: opacity 900ms;
}

.mk-hero__floor::before {
  content: "";
  position: absolute;
  left: -50%;
  right: -50%;
  top: 58%;
  height: 120%;
  transform-origin: top center;
  transform: rotateX(72deg);
  background-image:
    linear-gradient(var(--line-3) 2px, transparent 2px),
    linear-gradient(90deg, var(--line-3) 2px, transparent 2px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, transparent, #000 18%, #000 60%, transparent);
  animation: mk-floor 2.4s linear infinite;
}

.mk-hero[data-grid="ready"] .mk-hero__floor {
  opacity: 0;
}

@keyframes mk-floor {
  to { background-position: 0 64px; }
}

/* Scrim: keeps the headline legible over the lit scene. */
.mk-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, oklch(0.09 0.014 235 / 0.82) 0%, oklch(0.09 0.014 235 / 0.45) 34%, transparent 58%),
    linear-gradient(0deg, oklch(0.09 0.014 235 / 0.6), transparent 45%);
}

@media (max-width: 64rem) {
  .mk-hero::before {
    background: linear-gradient(0deg, oklch(0.09 0.014 235 / 0.9) 10%, oklch(0.09 0.014 235 / 0.4) 55%, transparent 80%);
  }
}

/* Fade the scene into the page below. */
.mk-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 30%;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, var(--void));
}

.mk-hero__labels {
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

/* Decorative corner brackets. */
.mk-hud {
  position: absolute;
  inset: calc(var(--bar-height) + var(--s-3)) var(--s-4) var(--s-4);
  z-index: 0;
  pointer-events: none;
}

.mk-hud__corner {
  position: absolute;
  width: 22px;
  height: 22px;
  border: 0 solid var(--line-3);
}

.mk-hud__corner:nth-child(1) { top: 0; left: 0; border-top-width: 1px; border-left-width: 1px; }
.mk-hud__corner:nth-child(2) { top: 0; right: 0; border-top-width: 1px; border-right-width: 1px; }
.mk-hud__corner:nth-child(3) { bottom: 0; left: 0; border-bottom-width: 1px; border-left-width: 1px; }
.mk-hud__corner:nth-child(4) { bottom: 0; right: 0; border-bottom-width: 1px; border-right-width: 1px; }

.mk-hero__content {
  position: relative;
  z-index: var(--z-hud);
  align-self: end;
  padding-top: calc(var(--bar-height) + var(--s-8));
  padding-bottom: var(--s-7);
  pointer-events: none;
}

.mk-hero__content a,
.mk-hero__content button {
  pointer-events: auto;
}

.mk-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  margin: 0 0 var(--s-4);
}

.mk-hero__eyebrow::before {
  content: "";
  width: var(--s-7);
  height: 1px;
  background: var(--signal);
  box-shadow: 0 0 8px var(--signal);
}

.mk-hero__title {
  margin: 0;
  font-weight: inherit;
}

.mk-hero__mark {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-mark);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: var(--tracking-mark);
  color: var(--fg-1);
  text-shadow: var(--glow-text-strong);
}

.mk-hero__mark span {
  color: var(--signal);
}

.mk-hero__headline {
  display: block;
  max-width: 34ch;
  margin-top: var(--s-5);
  font-family: var(--font-sans);
  font-size: clamp(1.125rem, 0.9rem + 1vw, 1.625rem);
  font-weight: 400;
  line-height: var(--leading-snug);
  color: var(--fg-2);
  text-wrap: balance;
}

.mk-hero__headline em {
  font-style: normal;
  color: var(--signal);
  text-shadow: var(--glow-text);
}

:root[lang="zh-Hans"] .mk-hero__headline,
:root[lang="zh-Hant"] .mk-hero__headline {
  max-width: 18em;
}

:root[lang="zh-Hans"] .mk-hero__lede,
:root[lang="zh-Hant"] .mk-hero__lede {
  max-width: 32em;
}

.mk-hero__lede {
  max-width: 52ch;
  margin: var(--s-3) 0 0;
  font-size: var(--text-sm);
  color: var(--fg-3);
}

.mk-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-top: var(--s-6);
}

.mk-hero__actions .mk-btn {
  max-width: 100%;
  min-width: 0;
  padding-block: var(--s-2);
  white-space: normal;
  overflow-wrap: anywhere;
}

/* Node rail: the accessible, clickable twin of the 3D scene. */
.mk-rail {
  position: absolute;
  z-index: var(--z-hud);
  bottom: var(--s-7);
  right: max(var(--page-gutter), calc((100vw - var(--page-max)) / 2));
  width: 17rem;
  padding: var(--s-4);
  background: oklch(0.11 0.014 235 / 0.55);
  border: 1px solid var(--line-2);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.mk-rail__head {
  display: flex;
  justify-content: space-between;
  padding-bottom: var(--s-3);
  margin-bottom: var(--s-2);
  border-bottom: 1px solid var(--line-2);
}

.mk-rail ol {
  margin: 0;
  padding: 0;
  list-style: none;
  max-height: 15.5rem;
  overflow-y: auto;
  scrollbar-width: thin;
}

.mk-rail [data-id] {
  --accent: oklch(var(--accent-l) var(--accent-c) var(--hue, 205));
  display: grid;
  grid-template-columns: 1.75rem 1fr auto;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--fg-2);
  border-left: 2px solid transparent;
  transition: background var(--dur-1), color var(--dur-1), border-color var(--dur-1);
}

.mk-rail a:hover,
.mk-rail [data-id].is-hot {
  color: var(--fg-1);
  background: linear-gradient(90deg, oklch(var(--accent-l) var(--accent-c) var(--hue, 205) / 0.16), transparent);
  border-left-color: var(--accent);
}

.mk-rail__idx {
  color: var(--fg-3);
}

.mk-rail__name {
  overflow: hidden;
  font-family: var(--font-display);
  font-size: var(--text-2xs);
  font-weight: 600;
  letter-spacing: var(--tracking-display);
  text-transform: uppercase;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.mk-rail .mk-status {
  font-size: 0.625rem;
}

@media (max-width: 64rem) {
  .mk-rail {
    display: none;
  }
}

/* Labels projected from 3D towers. */
.mk-tag3d {
  --accent: oklch(var(--accent-l) var(--accent-c) var(--hue, 205));
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  justify-items: center;
  gap: 2px;
  padding-bottom: 18px;
  white-space: nowrap;
  pointer-events: auto;
  cursor: pointer;
  will-change: transform;
  transition: opacity var(--dur-2);
}

.mk-tag3d::after {
  /* Leader line down to the tower top. */
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 1px;
  height: 16px;
  background: linear-gradient(var(--accent), transparent);
}

.mk-tag3d__name {
  padding: 2px 8px;
  border: 1px solid oklch(var(--accent-l) var(--accent-c) var(--hue, 205) / 0.5);
  background: oklch(0.11 0.014 235 / 0.7);
  font-family: var(--font-display);
  font-size: var(--text-2xs);
  font-weight: 700;
  letter-spacing: var(--tracking-display);
  text-transform: uppercase;
  color: var(--fg-1);
  text-shadow: 0 0 8px var(--accent);
  transition: background var(--dur-1), color var(--dur-1);
}

.mk-tag3d__meta {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0;
  transition: opacity var(--dur-1);
}

.mk-tag3d.is-hot .mk-tag3d__name {
  background: var(--accent);
  color: var(--on-signal);
  text-shadow: none;
}

.mk-tag3d.is-hot .mk-tag3d__meta {
  opacity: 1;
}

@media (max-width: 40rem) {
  .mk-hero {
    min-height: 0;
  }
  .mk-hero__content {
    padding-top: clamp(12rem, 27svh, 15rem);
    padding-bottom: var(--s-6);
  }
  .mk-hero__mark {
    letter-spacing: 0.06em;
  }
  .mk-hero__headline {
    margin-top: var(--s-4);
  }
  .mk-hero__actions {
    gap: var(--s-2);
    margin-top: var(--s-5);
  }
  .mk-hero__actions .mk-btn {
    justify-content: center;
    gap: var(--s-2);
    padding-inline: var(--s-3);
    font-size: var(--text-2xs);
    letter-spacing: 0.08em;
  }
}

/* ---- Section -------------------------------------------------------- */

.mk-section {
  position: relative;
  padding-block: var(--s-8);
  scroll-margin-top: var(--bar-height);
}

.mk-section--single {
  max-width: calc(56rem + 2 * var(--page-gutter));
}

.mk-section__head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--s-4);
  margin-bottom: var(--s-5);
  padding-bottom: var(--s-4);
  border-bottom: 1px solid var(--line-2);
}

/* A bright segment riding the section rule. */
.mk-section__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 6rem;
  height: 1px;
  background: var(--signal);
  box-shadow: 0 0 10px var(--signal);
}

.mk-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-display);
  text-transform: uppercase;
  text-shadow: var(--glow-text);
}

/* ---- Toolbar -------------------------------------------------------- */

.mk-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-3);
  margin-bottom: var(--s-5);
}

.mk-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
}

.mk-chip {
  --cut: 6px;
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: var(--s-2);
  height: 2.25rem;
  padding: 0 var(--s-3);
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--fg-2);
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  white-space: nowrap;
  cursor: pointer;
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
  transition: all var(--dur-1);
}

.mk-chip:hover {
  border-color: var(--line-3);
  color: var(--fg-1);
}

.mk-chip[aria-pressed="true"] {
  border-color: var(--signal);
  background: var(--signal);
  color: var(--on-signal);
  font-weight: 700;
}

.mk-chip__count {
  opacity: 0.7;
  font-variant-numeric: tabular-nums;
}

/* Search as a terminal prompt. */
.mk-search {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1 1 14rem;
  max-width: 24rem;
  margin-left: auto;
  height: 2.25rem;
  border: 1px solid var(--line-2);
  background: oklch(0.11 0.014 235 / 0.8);
  transition: border-color var(--dur-1), box-shadow var(--dur-1);
}

.mk-search:focus-within {
  border-color: var(--signal);
  box-shadow: 0 0 0 1px var(--signal), 0 0 18px oklch(0.88 0.13 205 / 0.25);
}

.mk-search__prompt {
  padding: 0 var(--s-2) 0 var(--s-3);
  font-family: var(--font-mono);
  color: var(--signal);
  text-shadow: var(--glow-text);
}

.mk-search input {
  flex: 1;
  min-width: 0;
  height: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--fg-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  caret-color: var(--signal);
}

.mk-search input::placeholder {
  color: var(--fg-3);
}

.mk-search input:focus {
  outline: none;
}

.mk-search input::-webkit-search-cancel-button {
  display: none;
}

.mk-search .mk-kbd {
  margin-right: var(--s-2);
}

.mk-segmented {
  display: inline-flex;
  border: 1px solid var(--line-2);
}

.mk-segmented button {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: calc(2.25rem - 2px);
  border: 0;
  background: transparent;
  color: var(--fg-3);
  cursor: pointer;
}

.mk-segmented button svg {
  width: 16px;
  height: 16px;
}

.mk-segmented button[aria-pressed="true"] {
  background: var(--signal-dim);
  color: var(--signal);
}

@media (max-width: 40rem) {
  .mk-search {
    order: -1;
    max-width: none;
    flex-basis: 100%;
    height: calc(2.75rem + 2px);
  }
  .mk-search input {
    font-size: 1rem;
  }
  .mk-chip {
    height: 2.75rem;
  }
  .mk-segmented button {
    width: 2.75rem;
    height: 2.75rem;
  }
  .mk-chips {
    flex: 1;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
  }
}

/* ---- Grid ----------------------------------------------------------- */

.mk-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(var(--tile-min), 100%), 1fr));
  gap: var(--s-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.mk-grid > li {
  display: flex;
  min-width: 0;
}

.mk-grid > li > * {
  flex: 1;
  min-width: 0;
}

.mk-grid--featured {
  grid-template-columns: repeat(auto-fit, minmax(min(30rem, 100%), 1fr));
}

@media (min-width: 48rem) {
  .mk-grid:not(.mk-grid--featured):not(.mk-grid--single) > li:has(> .mk-node--featured) {
    grid-column: span 2;
  }
}

.mk-grid--single {
  grid-template-columns: minmax(0, 1fr);
}

/* ---- Node: the core project unit ------------------------------------ */

.mk-node {
  --accent: oklch(var(--accent-l) var(--accent-c) var(--hue, 205));
  --accent-dim: oklch(var(--accent-l) var(--accent-c) var(--hue, 205) / 0.12);
  --accent-glow: oklch(var(--accent-l) var(--accent-c) var(--hue, 205) / 0.45);
  --mx: 50%;
  --my: 50%;
  --chamfer: polygon(
    var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut)
  );

  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
  min-height: 17rem;
  padding: var(--s-5);
  transition: filter var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
}

/* Border layer: accent on the chamfered corners, signal-tinted between. */
.mk-node::before,
.mk-node::after {
  content: "";
  position: absolute;
  z-index: -2;
  clip-path: var(--chamfer);
  pointer-events: none;
}

.mk-node::before {
  inset: 0;
  background:
    linear-gradient(135deg, var(--accent) 0 calc(var(--cut) + 14px), transparent calc(var(--cut) + 70px)),
    linear-gradient(315deg, var(--accent) 0 calc(var(--cut) + 14px), transparent calc(var(--cut) + 70px)),
    var(--line-2);
}

/* Fill layer: glass with a pointer-tracked accent glow. */
.mk-node::after {
  inset: 1px;
  z-index: -1;
  background:
    radial-gradient(420px circle at var(--mx) var(--my), var(--accent-dim), transparent 65%),
    linear-gradient(180deg, oklch(0.16 0.025 228 / 0.94), oklch(0.12 0.016 232 / 0.94));
}

.mk-node:hover,
.mk-node:focus-within {
  filter: drop-shadow(0 0 14px var(--accent-glow));
}

.mk-node:hover::before,
.mk-node:focus-within::before {
  background: var(--accent);
}

@media (hover: hover) {
  .mk-node:hover {
    transform: translateY(-3px);
  }
}

/* Scan sweep on hover. */
.mk-node__scan {
  position: absolute;
  inset: 1px;
  z-index: -1;
  clip-path: var(--chamfer);
  pointer-events: none;
  background: linear-gradient(180deg, transparent 0 46%, var(--accent-dim) 49%, var(--accent-glow) 50%, transparent 51% 100%);
  background-size: 100% 300%;
  background-position: 0 0;
  opacity: 0;
}

.mk-node:hover .mk-node__scan {
  opacity: 1;
  animation: mk-scan 1.1s var(--ease-in-out) 1;
}

@keyframes mk-scan {
  from { background-position: 0 100%; }
  to { background-position: 0 0; }
}

.mk-node__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  padding-left: calc(var(--cut) - var(--s-2));
}

.mk-node__head .mk-status {
  margin-left: auto;
}

.mk-node__main {
  display: flex;
  gap: var(--s-4);
  align-items: flex-start;
  flex: 1;
}

.mk-node__copy {
  flex: 1;
  min-width: 0;
}

/* Glyph: chamfered monogram plate in the project's light. */
.mk-glyph {
  --accent: oklch(var(--accent-l) var(--accent-c) var(--hue, 205));
  --accent-dim: oklch(var(--accent-l) var(--accent-c) var(--hue, 205) / 0.12);
  --cut: 6px;
  display: grid;
  place-items: center;
  flex: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--accent);
  background: var(--accent-dim);
  color: var(--accent);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-shadow: 0 0 10px currentColor;
  box-shadow: inset 0 0 12px var(--accent-dim);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
}

.mk-glyph img {
  width: 60%;
  height: 60%;
  object-fit: contain;
}

.mk-glyph svg {
  width: 16px;
  height: 16px;
}

.mk-node__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-display);
  text-transform: uppercase;
  overflow-wrap: anywhere;
  transition: text-shadow var(--dur-2);
}

.mk-node:hover .mk-node__title {
  text-shadow: 0 0 12px var(--accent-glow);
}

/* Whole-card hit area without nesting interactive elements. */
.mk-node__link::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: var(--z-raised);
}

.mk-node__link:focus-visible {
  outline: none;
}

.mk-node:has(.mk-node__link:focus-visible) {
  outline: 2px solid var(--focus);
  outline-offset: 4px;
}

.mk-node__tagline {
  margin: var(--s-2) 0 0;
  font-size: var(--text-sm);
  color: var(--fg-2);
  text-wrap: pretty;
}

/* Signal bars: a decorative per-project waveform, seeded from the id. */
.mk-sig {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 22px;
}

.mk-sig i {
  flex: 1;
  height: calc(var(--h) * 100%);
  background: var(--accent);
  opacity: 0.35;
  transform-origin: bottom;
  transition: opacity var(--dur-2);
}

.mk-node:hover .mk-sig i {
  opacity: 0.9;
  box-shadow: 0 0 6px var(--accent-glow);
  animation: mk-sig 0.9s var(--ease-in-out) infinite alternate;
  animation-delay: calc(var(--k) * -70ms);
}

.mk-node[data-status="soon"] .mk-sig i,
.mk-node[data-status="archived"] .mk-sig i {
  height: 2px;
}

@keyframes mk-sig {
  to { transform: scaleY(0.35); }
}

.mk-node__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-1) var(--s-3);
}

.mk-node__foot {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding-top: var(--s-3);
  border-top: 1px dashed var(--line-2);
}

.mk-route {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--fg-3);
  white-space: nowrap;
  text-overflow: ellipsis;
  transition: color var(--dur-1);
}

.mk-route::before {
  content: "› ";
  color: var(--accent, var(--signal));
}

.mk-node:hover .mk-route {
  color: var(--fg-1);
}

.mk-node__aux {
  position: relative;
  z-index: calc(var(--z-raised) + 1);
  display: flex;
  gap: var(--s-1);
}

.mk-node__aux a {
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  color: var(--fg-3);
  border: 1px solid transparent;
  transition: color var(--dur-1), border-color var(--dur-1);
}

.mk-node__aux a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.mk-node__aux svg,
.mk-node__arrow {
  width: 16px;
  height: 16px;
}

.mk-node__arrow {
  flex: none;
  color: var(--fg-3);
  transition: transform var(--dur-2) var(--ease-out), color var(--dur-2);
}

.mk-node:hover .mk-node__arrow {
  color: var(--accent);
  transform: translate(3px, -3px);
  filter: drop-shadow(0 0 4px var(--accent));
}

/* Featured: wide panel with a holographic cube and its own floor grid. */
.mk-node--featured {
  --cut: 22px;
  min-height: 19rem;
  padding: var(--s-6);
}

.mk-node--featured::after {
  background:
    radial-gradient(420px circle at var(--mx) var(--my), var(--accent-dim), transparent 65%),
    linear-gradient(0deg, oklch(var(--accent-l) var(--accent-c) var(--hue, 205) / 0.07) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(90deg, oklch(var(--accent-l) var(--accent-c) var(--hue, 205) / 0.07) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(160deg, oklch(0.17 0.03 228 / 0.95), oklch(0.11 0.016 232 / 0.95));
}

.mk-node--featured .mk-node__title {
  font-size: var(--text-xl);
}

.mk-node--featured .mk-node__tagline {
  font-size: var(--text-md);
  max-width: 44ch;
}

.mk-node__flag {
  color: var(--flare);
  text-shadow: 0 0 10px var(--flare);
  display: inline-block;
  white-space: nowrap;
}

@media (max-width: 40rem) {
  .mk-node,
  .mk-node--featured {
    padding: var(--s-5) var(--s-4);
  }
  .mk-node__main .mk-cube {
    --size: 2.75rem;
    margin: var(--s-2) 0 0;
  }
  .mk-node--featured .mk-node__title {
    font-size: var(--text-lg);
  }
  .mk-node__aux a {
    width: 2.75rem;
    height: 2.75rem;
  }
  .mk-tag {
    overflow-wrap: anywhere;
    white-space: normal;
  }
}

/* Rotating wireframe cube carrying the monogram. */
.mk-cube {
  --size: 4.5rem;
  flex: none;
  width: var(--size);
  height: var(--size);
  perspective: 600px;
  margin: var(--s-2) var(--s-3) 0 var(--s-1);
}

.mk-cube__spin {
  display: block;
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  animation: mk-cube 14s linear infinite;
}

.mk-cube__face {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border: 1px solid var(--accent);
  background: oklch(var(--accent-l) var(--accent-c) var(--hue, 205) / 0.06);
  box-shadow: inset 0 0 18px var(--accent-dim), 0 0 8px var(--accent-dim);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent);
  text-shadow: 0 0 12px var(--accent);
}

.mk-cube__face:nth-child(1) { transform: translateZ(calc(var(--size) / 2)); }
.mk-cube__face:nth-child(2) { transform: rotateY(90deg) translateZ(calc(var(--size) / 2)); }
.mk-cube__face:nth-child(3) { transform: rotateY(180deg) translateZ(calc(var(--size) / 2)); }
.mk-cube__face:nth-child(4) { transform: rotateY(-90deg) translateZ(calc(var(--size) / 2)); }
.mk-cube__face:nth-child(5) { transform: rotateX(90deg) translateZ(calc(var(--size) / 2)); }
.mk-cube__face:nth-child(6) { transform: rotateX(-90deg) translateZ(calc(var(--size) / 2)); }

@keyframes mk-cube {
  from { transform: rotateX(-22deg) rotateY(0deg); }
  to { transform: rotateX(-22deg) rotateY(360deg); }
}

.mk-node--featured:hover .mk-cube__spin {
  animation-duration: 3s;
}

/* Lifecycle states. */
.mk-node[data-status="soon"] {
  --accent-c: 0.04;
}

.mk-node[data-status="soon"] .mk-node__arrow,
.mk-node[data-status="soon"] .mk-route {
  opacity: 0.6;
}

/* ---- Status --------------------------------------------------------- */

.mk-status {
  --c: var(--status-soon);
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  font-weight: 600;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--c);
  text-shadow: 0 0 8px color-mix(in oklch, var(--c) 50%, transparent);
}

.mk-status::before {
  content: "";
  width: 7px;
  height: 7px;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
  transform: rotate(45deg);
}

.mk-status[data-status="live"] { --c: var(--status-live); }
.mk-status[data-status="beta"] { --c: var(--status-beta); }
.mk-status[data-status="alpha"] { --c: var(--status-alpha); }
.mk-status[data-status="soon"] { --c: var(--status-soon); }
.mk-status[data-status="archived"] { --c: var(--status-archived); }

.mk-status[data-status="soon"]::before,
.mk-status[data-status="archived"]::before {
  background: transparent;
  box-shadow: inset 0 0 0 1px currentColor;
}

.mk-status[data-status="live"]::before {
  animation: mk-beacon 1.6s steps(1) infinite;
}

@keyframes mk-beacon {
  85% { opacity: 0.25; }
}

/* ---- Tag ------------------------------------------------------------ */

.mk-tag {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  color: var(--fg-3);
  white-space: nowrap;
}

.mk-tag::before {
  content: "#";
  color: var(--line-3);
}

.mk-tag--kind {
  color: var(--accent, var(--fg-2));
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.mk-tag--kind::before {
  content: "◇ ";
  color: inherit;
}

/* ---- List view ------------------------------------------------------ */

.mk-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-2);
}

.mk-row {
  --accent: oklch(var(--accent-l) var(--accent-c) var(--hue, 205));
  --accent-dim: oklch(var(--accent-l) var(--accent-c) var(--hue, 205) / 0.12);
  position: relative;
  display: grid;
  grid-template-columns: 2.5rem 2.25rem minmax(0, 1fr) 8rem 6.5rem minmax(0, 15rem) 1rem;
  align-items: center;
  gap: var(--s-4);
  padding: var(--s-3);
  border-bottom: 1px solid var(--line-1);
  font-family: var(--font-mono);
  transition: background var(--dur-1);
}

.mk-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  transform: scaleY(0);
  transition: transform var(--dur-2) var(--ease-out);
}

.mk-row:hover,
.mk-row:focus-within {
  background: linear-gradient(90deg, var(--accent-dim), transparent 70%);
}

.mk-row:hover::before,
.mk-row:focus-within::before {
  transform: scaleY(1);
}

.mk-row:has(.mk-node__link:focus-visible) {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
}

.mk-row__index {
  font-size: var(--text-xs);
  color: var(--fg-3);
  font-variant-numeric: tabular-nums;
}

.mk-row .mk-glyph {
  width: 2.25rem;
  height: 2.25rem;
  font-size: var(--text-2xs);
}

.mk-row__name {
  min-width: 0;
}

.mk-row__name .mk-node__title {
  font-size: var(--text-sm);
}

.mk-row__name p {
  margin: 0;
  overflow: hidden;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--fg-3);
  white-space: nowrap;
  text-overflow: ellipsis;
}

.mk-row:hover .mk-route,
.mk-row:hover .mk-node__arrow {
  color: var(--accent);
}

.mk-row .mk-node__arrow {
  color: var(--fg-3);
}

.mk-row[data-status="archived"] {
  --accent-c: 0;
}

.mk-row[data-status="archived"] .mk-node__title {
  color: var(--fg-3);
}

@media (max-width: 56rem) {
  .mk-row {
    grid-template-columns: 2.25rem minmax(0, 1fr) auto 1rem;
  }
  .mk-row__index,
  .mk-row .mk-tag--kind,
  .mk-row .mk-route {
    display: none;
  }
}

/* ---- Empty ---------------------------------------------------------- */

.mk-empty {
  display: grid;
  place-items: center;
  gap: var(--s-4);
  padding: var(--s-9) var(--s-5);
  border: 1px dashed var(--line-2);
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--fg-3);
}

.mk-empty p {
  margin: 0;
}

/* ---- Palette: terminal jump (⌘K) ------------------------------------ */

.mk-palette {
  --cut: 16px;
  width: min(40rem, calc(100vw - 2rem));
  max-height: min(32rem, calc(var(--palette-viewport, 100dvh) - 2rem));
  margin: calc(var(--palette-offset, 0px) + min(8vh, 4rem)) auto auto;
  padding: 1px;
  border: 0;
  background: var(--signal);
  color: var(--fg-1);
  overflow: hidden;
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
}

.mk-palette[open] {
  display: flex;
  animation: mk-materialize var(--dur-2) var(--ease-out);
}

.mk-palette::backdrop {
  background: var(--bg-overlay);
  backdrop-filter: blur(6px);
}

.mk-palette__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
  min-height: 0;
  background:
    var(--scanlines),
    linear-gradient(180deg, oklch(0.15 0.025 228), oklch(0.11 0.016 232));
  clip-path: polygon(calc(var(--cut) - 0.4px) 0, 100% 0, 100% calc(100% - var(--cut) + 0.4px), calc(100% - var(--cut) + 0.4px) 100%, 0 100%, 0 calc(var(--cut) - 0.4px));
}

.mk-palette__title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-1) var(--s-2) var(--s-1) calc(var(--s-5) + 4px);
  border-bottom: 1px solid var(--line-2);
}

.mk-palette__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  min-width: 2.75rem;
  min-height: 2.75rem;
  padding: var(--s-2);
  border: 0;
  color: var(--fg-2);
  background: transparent;
  cursor: pointer;
}

.mk-palette__close:hover {
  color: var(--signal);
  background: var(--signal-dim);
}

.mk-palette__close svg {
  width: 18px;
  height: 18px;
}

@media (max-width: 40rem) {
  .mk-palette {
    margin-top: calc(var(--palette-offset, 0px) + 1rem);
  }
  .mk-palette__close .mk-kbd,
  .mk-palette__foot {
    display: none !important;
  }
}

.mk-palette__prompt {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-4) var(--s-5);
  border-bottom: 1px solid var(--line-2);
  font-family: var(--font-mono);
}

.mk-palette__prompt > span {
  color: var(--signal);
  text-shadow: var(--glow-text);
}

.mk-palette__input {
  flex: 1;
  min-width: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--fg-1);
  font-family: var(--font-mono);
  font-size: var(--text-md);
  caret-color: var(--signal);
}

.mk-palette__input:focus {
  outline: none;
}

.mk-palette__list {
  flex: 1;
  margin: 0;
  padding: var(--s-2);
  overflow-y: auto;
  list-style: none;
}

.mk-palette__group {
  padding: var(--s-3) var(--s-3) var(--s-1);
}

.mk-palette__item {
  --accent: oklch(var(--accent-l) var(--accent-c) var(--hue, 205));
  --accent-dim: oklch(var(--accent-l) var(--accent-c) var(--hue, 205) / 0.14);
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-2) var(--s-3);
  cursor: pointer;
}

.mk-palette__item .mk-glyph {
  width: 2rem;
  height: 2rem;
  font-size: var(--text-2xs);
}

.mk-palette__item[aria-selected="true"] {
  background: linear-gradient(90deg, var(--accent-dim), transparent);
  box-shadow: inset 2px 0 0 var(--accent);
}

.mk-palette__text {
  flex: 1;
  min-width: 0;
}

.mk-palette__text strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: var(--tracking-display);
  text-transform: uppercase;
}

.mk-palette__text span {
  display: block;
  overflow: hidden;
  font-size: var(--text-xs);
  color: var(--fg-3);
  white-space: nowrap;
  text-overflow: ellipsis;
}

.mk-palette__foot {
  display: flex;
  gap: var(--s-4);
  padding: var(--s-2) var(--s-5);
  border-top: 1px solid var(--line-2);
}

.mk-palette__foot span {
  display: inline-flex;
  align-items: center;
  gap: var(--s-1);
}

@keyframes mk-materialize {
  from { opacity: 0; transform: scaleY(0.02); filter: brightness(3); }
  60% { opacity: 1; transform: scaleY(1.02); }
  to { transform: none; filter: none; }
}

/* ---- Footer --------------------------------------------------------- */

.mk-footer {
  position: relative;
  margin-top: var(--s-9);
  padding-block: var(--s-7) var(--s-6);
  border-top: 1px solid var(--line-2);
  overflow: hidden;
}

.mk-footer__mark {
  display: block;
  margin-bottom: var(--s-6);
  font-family: var(--font-display);
  font-size: clamp(3rem, 12vw, 11rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: var(--tracking-mark);
  color: transparent;
  -webkit-text-stroke: 1px var(--line-3);
  white-space: nowrap;
  user-select: none;
}

.mk-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
}

.mk-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-6);
  margin: 0;
  padding: 0;
  list-style: none;
}

.mk-footer__links a {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--fg-2);
}

.mk-footer__links a:hover {
  color: var(--signal);
  text-shadow: var(--glow-text);
}

/* ---- Notice --------------------------------------------------------- */

.mk-notice {
  position: fixed;
  left: 50%;
  top: calc(var(--bar-height) + var(--s-2));
  z-index: var(--z-bar);
  translate: -50% 0;
  display: flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-2) var(--s-4);
  border: 1px solid var(--flare);
  background: oklch(0.11 0.014 235 / 0.92);
  color: var(--flare);
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  white-space: nowrap;
}

@media (max-width: 40rem) {
  .mk-notice {
    width: calc(100vw - 2rem);
    justify-content: center;
    white-space: normal;
    text-align: center;
  }
}

/* ---- Entrance ------------------------------------------------------- */

.mk-enter {
  animation: mk-rez var(--dur-3) var(--ease-out) both;
  animation-delay: calc(var(--i, 0) * var(--stagger));
}

.mk-enter:focus-within {
  animation: none;
}

.mk-load-error {
  padding: var(--s-4);
  border: 1px solid var(--flare);
  color: var(--fg-2);
}

/* "Rez in": a flicker of light, then solid. */
@keyframes mk-rez {
  0% { opacity: 0; transform: translateY(14px); filter: brightness(2.2) saturate(0.4); }
  30% { opacity: 0.6; }
  45% { opacity: 0.2; }
  60% { opacity: 1; }
  100% { opacity: 1; transform: none; filter: none; }
}

/* ---- Reduced motion: everything still, nothing lost ----------------- */

@media (prefers-reduced-motion: reduce) {
  .mk-enter,
  .mk-palette[open],
  .mk-hero__floor::before,
  .mk-status[data-status="live"]::before,
  .mk-node:hover .mk-sig i,
  .mk-node:hover .mk-node__scan {
    animation: none;
  }
  .mk-cube__spin {
    animation: none;
    transform: rotateX(-22deg) rotateY(-32deg);
  }
  .mk-node:hover {
    transform: none;
  }
}