/* ========================================================================== */
/* MURMELI — style                                                            */
/* Same design system as Spatial Library Brinzauls: pure black, Geist Mono,   */
/* 1px hairlines, no radius, fixed right-hand panel.                          */
/* ========================================================================== */

:root {
  color-scheme: dark;

  --black: #000000;
  --surface: #050505;
  --surface-2: #0a0a0a;
  --surface-3: #111111;

  --border: #282828;
  --border-light: #3a3a3a;

  --text: #eeeeee;
  --muted: #8d8d8d;
  --muted-dark: #666666;

  --accent-strong: #ffffff;

  --interface-width: 370px;
  --content-max: 980px;
  --measure: 68ch;

  font-family:
    "Geist Mono",
    ui-monospace,
    "SFMono-Regular",
    Menlo,
    Consolas,
    monospace;
}


/* -------------------------------------------------------------------------- */
/* GLOBAL                                                                     */
/* -------------------------------------------------------------------------- */

* { box-sizing: border-box; }

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--black);
  color: var(--text);
}

body {
  min-width: 320px;
  font-size: 12px;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select { font: inherit; }

button { cursor: pointer; }

a { color: inherit; }

:focus-visible {
  outline: 1px solid #bbbbbb;
  outline-offset: 2px;
}

.hidden { display: none !important; }

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


/* -------------------------------------------------------------------------- */
/* LAYOUT                                                                     */
/* -------------------------------------------------------------------------- */

.app-shell {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  background: var(--black);
}

.main-panel {
  position: absolute;
  inset: 0 var(--interface-width) 0 0;
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
  overscroll-behavior: contain;
}

.side-panel {
  position: absolute;
  z-index: 30;
  top: 0;
  right: 0;
  bottom: 0;
  width: var(--interface-width);
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border);
  background: var(--black);
}


/* -------------------------------------------------------------------------- */
/* TOP BAR / BRAND                                                            */
/* -------------------------------------------------------------------------- */

.topbar {
  flex: 0 0 auto;
  padding: 25px 22px 17px;
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.17em;
  line-height: 1.3;
}

.brand-title {
  margin: 0;
  max-width: 320px;
  color: var(--accent-strong);
  font-size: 38px;
  font-weight: 800;
  letter-spacing: -0.055em;
  line-height: 0.88;
  text-transform: uppercase;
}

.brand-subtitle {
  margin: 12px 0;
  color: var(--muted);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.11em;
  line-height: 1.6;
  text-transform: uppercase;
}

.subtitle-link {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}

.subtitle-link:hover { color: var(--text); }

.topbar-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.topbar-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}


/* -------------------------------------------------------------------------- */
/* BUTTONS                                                                    */
/* -------------------------------------------------------------------------- */

.button,
.seg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 31px;
  padding: 0 10px;
  border: 1px solid var(--border-light);
  border-radius: 0;
  color: #dddddd;
  background: #0c0c0c;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}

.button:hover,
.seg:hover {
  border-color: #aaaaaa;
  color: #ffffff;
  background: #1b1b1b;
}

.button:active,
.seg:active { background: #2a2a2a; }

.seg.is-active {
  border-color: var(--accent-strong);
  color: var(--black);
  background: var(--accent-strong);
}

.button-large {
  min-height: 40px;
  padding: 0 16px;
  font-size: 10px;
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 31px;
  height: 31px;
  padding: 0;
  border: 0;
  color: var(--muted);
  background: transparent;
}

.icon-button:hover { color: var(--text); }

.icon-button svg { transition: transform 160ms ease; }
.icon-button[aria-expanded="false"] svg { transform: rotate(180deg); }


/* -------------------------------------------------------------------------- */
/* CONTENTS PANEL                                                             */
/* -------------------------------------------------------------------------- */

.contents-panel {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 49px;
  padding: 0 14px 0 22px;
  border-bottom: 1px solid var(--border);
}

.panel-title {
  color: var(--text);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.panel-subtitle {
  margin-top: 3px;
  color: var(--muted-dark);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.contents-list {
  flex: 1 1 auto;
  min-height: 0;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  list-style: none;
}

.contents-list.is-collapsed { display: none; }

.contents-list a {
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 22px;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.contents-list a small {
  color: var(--muted-dark);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: none;
}

.contents-list a:hover {
  color: var(--text);
  background: var(--surface-2);
}

.contents-list a.is-current {
  color: var(--accent-strong);
  background: var(--surface-3);
}

.contents-list a.is-current::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent-strong);
}

.side-footer {
  flex: 0 0 auto;
  padding: 12px 22px 14px;
  border-top: 1px solid var(--border);
  color: var(--muted-dark);
  font-size: 9px;
  letter-spacing: 0.06em;
  line-height: 1.5;
  text-transform: uppercase;
}


/* -------------------------------------------------------------------------- */
/* LANDING                                 */
/* -------------------------------------------------------------------------- */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: var(--black);
}

.viewer-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: rgba(0, 0, 0, 0.72);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.status-link { color: inherit; text-underline-offset: 2px; }
.status-link:hover { color: var(--text); }

.status-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border-radius: 50%;
  background: #eeeeee;
  box-shadow: 0 0 9px rgba(238, 238, 238, 0.55);
}

.hero-kicker {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-title {
  margin: 0 0 14px;
  color: var(--accent-strong);
  font-size: clamp(48px, 6vw, 84px);
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 0.88;
  text-transform: uppercase;
}

.hero-lede {
  max-width: 58ch;
  margin: 0 0 16px;
  color: #d6d6d6;
  font-size: 13px;
  line-height: 1.65;
}

.hero-toolbar {
  display: block;
  width: 100%;
  max-width: 520px;
  height: auto;
  margin: 0 0 16px;
  border: 1px solid var(--border);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.button-primary {
  border-color: var(--accent-strong);
  color: var(--black);
  background: var(--accent-strong);
}

.button-primary:hover {
  border-color: #dcdcdc;
  color: var(--black);
  background: #dcdcdc;
}

.hero-box {
  position: absolute;
  z-index: 5;
  left: 16px;
  bottom: 16px;
  width: min(520px, calc(100% - 32px));
  padding: 22px;
  border: 1px solid var(--border-light);
  background: rgba(0, 0, 0, 0.86);
}


/* Landing photo ------------------------------------------------ */

.hero-photo-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 60% 40%;
}

.hero-photo-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0) 55%);
}

.hero-credit {
  position: absolute;
  z-index: 5;
  top: 15px;
  left: 16px;
}


/* -------------------------------------------------------------------------- */
/* CONTENT BLOCKS                                                             */
/* -------------------------------------------------------------------------- */

.content {
  max-width: var(--content-max);
  padding: 0 40px;
}

.block {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 0;
}

.block-last { border-bottom: 0; padding-bottom: 120px; }

.block-head { margin-bottom: 32px; }

.block h2 {
  margin: 0 0 18px;
  color: var(--accent-strong);
  font-size: clamp(30px, 4.2vw, 52px);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.92;
  text-transform: uppercase;
}

.block-intro,
.prose {
  max-width: var(--measure);
  margin: 0;
  color: #cfcfcf;
  font-size: 13.5px;
  line-height: 1.7;
}

.prose { margin: 28px 0; }

.note {
  max-width: var(--measure);
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}

.note a,
.prose a { text-underline-offset: 2px; }

.block h3 {
  margin: 0 0 8px;
  color: var(--text);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}


/* -------------------------------------------------------------------------- */
/* FIGURES                                                                    */
/* -------------------------------------------------------------------------- */

.figure-slot { margin: 0 0 28px; }

.figure-slot figure { margin: 0; }

.figure-button {
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--border);
  background: transparent;
  cursor: zoom-in;
}

/* white-on-transparent drawings sit on black, with room around them */
.figure-button.is-dark { background: var(--black); }

/* small UI captures stay at their real size instead of stretching */
.figure-button.is-natural { border-color: var(--border-light); }

.figure-button img {
  display: block;
  width: 100%;
  height: auto;
}

.figure-button:hover { border-color: #aaaaaa; }

.figure-slot figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.5;
}

.fig-credit,
.fig-source {
  display: block;
  color: var(--muted-dark);
}

.fig-credit { color: var(--muted); }

.fig-source a { color: inherit; text-underline-offset: 2px; }

/* Placeholder until the image is uploaded */
.figure-missing {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  gap: 6px;
  min-height: 180px;
  padding: 14px;
  border: 1px dashed var(--border-light);
  color: var(--muted-dark);
  background:
    repeating-linear-gradient(
      -45deg,
      transparent 0 10px,
      rgba(255, 255, 255, 0.025) 10px 11px
    );
  font-size: 10px;
  line-height: 1.5;
}

.figure-missing strong {
  color: var(--muted);
  font-weight: 600;
}

.figure-missing code { color: var(--text); }

.figure-slot[data-figure="fig-1"] .figure-missing { min-height: 300px; }
.figure-slot[data-figure="fig-2"] .figure-missing { min-height: 120px; }

.figure-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  align-items: start;
}

.figure-row .figure-slot { margin-bottom: 0; }

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


/* -------------------------------------------------------------------------- */
/* METHOD CYCLE                                                               */
/* -------------------------------------------------------------------------- */

.cycle {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--border);
}

.cycle li + li { border-left: 1px solid var(--border); }

.cycle-step {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
  width: 100%;
  min-height: 86px;
  padding: 10px 10px 12px;
  border: 0;
  color: var(--muted);
  background: transparent;
  text-align: left;
}

.cycle-step:hover { color: var(--text); background: var(--surface-2); }

.cycle-step.is-active {
  color: var(--black);
  background: var(--accent-strong);
}

.cycle-n {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}

.cycle-name {
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* realm marker: digital steps get a solid top rule, physical a dashed one */
.cycle-step::after {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  border-top: 3px solid currentColor;
  opacity: 0.6;
}

.cycle-step[data-realm="physical"]::after { border-top-style: dashed; }

.cycle-detail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 24px;
  padding: 22px;
  border: 1px solid var(--border);
  border-top: 0;
  background: var(--surface);
}

.cycle-detail h3 {
  margin: 0 0 10px;
  font-size: 14px;
  letter-spacing: 0.04em;
}

.cycle-detail p {
  max-width: 60ch;
  margin: 0;
  color: #cfcfcf;
  font-size: 13px;
  line-height: 1.7;
}

.cycle-aside {
  padding-left: 18px;
  border-left: 1px solid var(--border);
  color: var(--muted);
  font-size: 10px;
  line-height: 1.6;
}

.cycle-aside dt {
  color: var(--muted-dark);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cycle-aside dd {
  margin: 2px 0 12px;
  color: var(--text);
}

.cycle-legend {
  display: flex;
  gap: 18px;
  margin-top: 10px;
  color: var(--muted-dark);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.cycle-legend span::before {
  content: "";
  display: inline-block;
  width: 18px;
  margin-right: 6px;
  vertical-align: middle;
  border-top: 2px solid var(--muted);
}

.cycle-legend .lg-physical::before { border-top-style: dashed; }


/* -------------------------------------------------------------------------- */
/* COMPONENT LIBRARY                                                          */
/* -------------------------------------------------------------------------- */

.library { border: 1px solid var(--border); }

.library-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.search input {
  width: 220px;
  min-height: 31px;
  padding: 0 10px;
  border: 1px solid var(--border-light);
  border-radius: 0;
  color: var(--text);
  background: var(--black);
  font-size: 11px;
}

.search input::placeholder { color: var(--muted-dark); }

.component-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.component {
  display: grid;
  grid-template-columns: 34px minmax(0, 210px) minmax(0, 1fr) 150px;
  gap: 14px;
  align-items: baseline;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

.component:last-child { border-bottom: 0; }

.component:hover { background: var(--surface-2); }

.component-cat {
  color: var(--muted-dark);
  font-size: 10px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.component-name {
  color: var(--text);
  font-size: 11px;
  font-weight: 700;
}

.component-name .badge {
  display: inline-block;
  margin-top: 6px;
}

.component-name em {
  margin-left: 6px;
  color: var(--muted);
  font-style: normal;
  font-weight: 500;
}

.component-text {
  color: #bdbdbd;
  font-size: 11.5px;
  line-height: 1.55;
}

.badge {
  padding: 2px 6px;
  font-weight: 700;
  border: 1px solid var(--border-light);
  color: var(--muted);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.component-files {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 5px;
}

.file-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 24px;
  padding: 0 8px;
  border: 1px solid var(--border-light);
  color: #dddddd;
  background: #0c0c0c;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
}

.file-chip:hover {
  border-color: #aaaaaa;
  color: #ffffff;
  background: #1b1b1b;
}

.empty-state {
  margin: 0;
  padding: 24px 14px;
  color: var(--muted);
  font-size: 11px;
}


/* -------------------------------------------------------------------------- */
/* GEODATA                                                                    */
/* -------------------------------------------------------------------------- */

.problems {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
  border: 1px solid var(--border);
  counter-reset: problem;
}

.problems li {
  padding: 16px;
  color: #bdbdbd;
  font-size: 11.5px;
  line-height: 1.6;
  counter-increment: problem;
}

.problems li + li { border-left: 1px solid var(--border); }

.problems li::before {
  content: counter(problem);
  display: block;
  margin-bottom: 14px;
  color: var(--accent-strong);
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
}

.problems strong { color: var(--text); }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
}

.data-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 11px;
}

.data-table th,
.data-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.data-table tr:last-child td { border-bottom: 0; }

.data-table th {
  color: var(--muted);
  background: var(--surface);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.data-table td:first-child { color: var(--text); font-weight: 700; }
.data-table td { color: #bdbdbd; line-height: 1.55; }


/* -------------------------------------------------------------------------- */
/* PRECISION CALCULATOR                                                       */
/* -------------------------------------------------------------------------- */

.calc {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  border: 1px solid var(--border);
}

.calc-input {
  padding: 22px;
  border-right: 1px solid var(--border);
  background: var(--surface);
}

.field-label {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.scale-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--accent-strong);
}

.scale-prefix {
  flex: 0 0 auto;
  white-space: nowrap;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.05em;
}

.scale-row input {
  width: 100%;
  min-width: 0;
  padding: 0 0 4px;
  border: 0;
  border-bottom: 1px solid var(--border-light);
  border-radius: 0;
  color: var(--accent-strong);
  background: transparent;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.05em;
  font-variant-numeric: tabular-nums;
  -moz-appearance: textfield;
}

.scale-row input::-webkit-outer-spin-button,
.scale-row input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.scale-row input:focus { outline: 0; border-bottom-color: var(--accent-strong); }

.calc-out {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
}

.calc-out > div {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}

.calc-out > div:nth-child(odd) { border-right: 1px solid var(--border); }
.calc-out > div:nth-last-child(-n + 2) { border-bottom: 0; }

.calc-out dt {
  color: var(--muted);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.calc-out dd {
  margin: 10px 0 6px;
  color: var(--accent-strong);
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.calc-out dd.is-text { font-size: 15px; letter-spacing: 0; line-height: 1.3; }

.calc-out small {
  color: var(--muted-dark);
  font-size: 10px;
  line-height: 1.4;
}


/* -------------------------------------------------------------------------- */
/* LIMITS                                                                     */
/* -------------------------------------------------------------------------- */

.limits {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--border);
}

.limits > div { padding: 18px 20px; }
.limits > div:nth-child(odd) { border-right: 1px solid var(--border); }
.limits > div:nth-child(-n + 2) { border-bottom: 1px solid var(--border); }

.limits p {
  margin: 0;
  color: #bdbdbd;
  font-size: 12px;
  line-height: 1.6;
}

.pull {
  max-width: 62ch;
  margin: 40px 0 0;
  padding: 0 0 0 20px;
  border-left: 3px solid var(--accent-strong);
  color: var(--text);
  font-size: 16px;
  line-height: 1.55;
}


/* -------------------------------------------------------------------------- */
/* INSTALL                                                                    */
/* -------------------------------------------------------------------------- */

.downloads {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  margin-bottom: 20px;
  border: 1px solid var(--border);
}

.download-main {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 8px;
  min-height: 190px;
  padding: 22px;
  border-right: 1px solid var(--border);
  color: var(--black);
  background: var(--accent-strong);
  text-decoration: none;
}

.download-main:hover { background: #dcdcdc; }

.download-kind {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.download-main strong {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.download-meta { font-size: 11px; }

.download-list { display: flex; flex-direction: column; }

.download-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex: 1;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
}

.download-item:last-child { border-bottom: 0; }

.download-item:hover { background: var(--surface-3); }

.download-item strong { font-size: 11px; font-weight: 700; }

.download-item span { color: var(--muted); font-size: 10px; text-align: right; }

.install {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 20px;
  border: 1px solid var(--border);
}

.install-col { padding: 20px; }
.install-col + .install-col { border-left: 1px solid var(--border); }

.steps {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  position: relative;
  padding: 0 0 12px 30px;
  color: #cfcfcf;
  font-size: 12px;
  line-height: 1.6;
  counter-increment: step;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 20px;
  height: 20px;
  border: 1px solid var(--border-light);
  color: var(--text);
  font-size: 10px;
  font-weight: 700;
  line-height: 18px;
  text-align: center;
}

.facts {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 24px;
  border: 1px solid var(--border);
}

.facts > div {
  flex: 1 1 140px;
  padding: 12px 14px;
  border-right: 1px solid var(--border);
}

.facts > div:last-child { border-right: 0; }

.facts span {
  display: block;
  color: var(--muted-dark);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.facts strong {
  display: block;
  margin-top: 4px;
  color: var(--text);
  font-size: 12px;
}


/* -------------------------------------------------------------------------- */
/* PAPER & CITATION                                                           */
/* -------------------------------------------------------------------------- */

.paper-card {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  padding: 22px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.paper-meta p { margin: 0; }

.paper-title {
  max-width: 34ch;
  color: var(--accent-strong);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.paper-authors {
  margin-top: 10px !important;
  color: #cfcfcf;
  font-size: 11.5px;
}

.paper-venue {
  margin-top: 4px !important;
  color: var(--muted);
  font-size: 10.5px;
}

.paper-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.cite-box {
  margin-top: 14px;
  border: 1px solid var(--border);
}

.cite-tabs {
  padding: 10px;
  border-bottom: 1px solid var(--border);
}

.seg-action { margin-left: auto; }

.cite-output {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  color: #cfcfcf;
  font-family: inherit;
  font-size: 11px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.cite-output.is-code { white-space: pre; word-break: normal; }


/* -------------------------------------------------------------------------- */
/* DIALOGS                                                                    */
/* -------------------------------------------------------------------------- */

.description-dialog {
  width: min(760px, calc(100vw - 2rem));
  max-height: 82vh;
  padding: 0;
  border: 0;
  border-radius: 0;
  color: #1d1d1b;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(8px);
}

.description-dialog::backdrop,
.lightbox::backdrop {
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
}

.description-dialog-inner {
  display: flex;
  flex-direction: column;
  max-height: 82vh;
}

.description-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
}

.description-dialog-header h2 {
  margin: 0;
  font-size: 1.25rem;
  text-transform: uppercase;
}

.description-close,
.lightbox-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  font-size: 1.6rem;
  line-height: 0;
}

.description-dialog-body {
  overflow-y: auto;
  padding: 0.25rem 1.5rem 1.5rem;
  font-size: 12.5px;
}

.description-dialog-body section { margin-bottom: 1.5rem; }
.description-dialog-body section:last-child { margin-bottom: 0; }

.description-dialog-body h3 {
  margin: 0 0 0.6rem;
  font-size: 0.9rem;
  text-transform: uppercase;
}

.description-dialog-body p { margin: 0 0 0.75rem; line-height: 1.6; }
.description-dialog-body ul { margin: 0; padding-left: 1.25rem; }
.description-dialog-body li { margin-bottom: 0.45rem; line-height: 1.5; }

.lightbox {
  width: min(1400px, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  padding: 44px 16px 16px;
  border: 1px solid var(--border);
  border-radius: 0;
  color: var(--text);
  background: var(--black);
}

.lightbox img {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 160px);
  margin: 0 auto;
}

.lightbox-close {
  position: absolute;
  top: 6px;
  right: 8px;
  color: var(--text);
}

.lightbox-caption {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}


/* -------------------------------------------------------------------------- */
/* RESPONSIVE                                                                 */
/* -------------------------------------------------------------------------- */

@media (max-width: 1100px) {
  .cycle { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .cycle li:nth-child(5) { border-left: 0; }
  .cycle li:nth-child(n + 5) { border-top: 1px solid var(--border); }
  .cycle-detail { grid-template-columns: 1fr; }
  .cycle-aside { padding-left: 0; padding-top: 14px; border-left: 0; border-top: 1px solid var(--border); }
  .calc { grid-template-columns: 1fr; }
  .calc-input { border-right: 0; border-bottom: 1px solid var(--border); }
  .component { grid-template-columns: 28px minmax(0, 1fr); }
  .component-text,
  .component-files { grid-column: 2 / -1; }
  .component-files { flex-direction: row; flex-wrap: wrap; align-items: flex-start; }
}

@media (max-width: 860px) {
  html, body { overflow: auto; height: auto; }

  .app-shell { height: auto; overflow: visible; }

  .side-panel {
    position: relative;
    width: 100%;
    border-left: 0;
    border-bottom: 1px solid var(--border);
    padding-top: env(safe-area-inset-top, 0px);
  }

  .contents-panel { flex: none; }
  .contents-list { max-height: none; }
  .contents-list.is-mobile-collapsed { display: none; }
  .side-footer { display: none; }

  .main-panel {
    position: relative;
    inset: auto;
    overflow: visible;
  }


  .content { padding: 0 18px calc(env(safe-area-inset-bottom, 0px) + 20px); }

  .block { padding: 52px 0; }

  .figure-row { grid-template-columns: 1fr; }

  .problems,
  .limits,
  .install,
  .downloads { grid-template-columns: 1fr; }

  .download-main { min-height: 150px; border-right: 0; border-bottom: 1px solid var(--border); }

  .problems li + li,
  .install-col + .install-col { border-left: 0; border-top: 1px solid var(--border); }

  .limits > div { border-right: 0 !important; border-bottom: 1px solid var(--border); }
  .limits > div:last-child { border-bottom: 0; }

  .calc-out { grid-template-columns: 1fr; }
  .calc-out > div { border-right: 0 !important; border-bottom: 1px solid var(--border) !important; }
  .calc-out > div:last-child { border-bottom: 0 !important; }

  .search, .search input { width: 100%; }

  .hero { min-height: 0; }
  .hero-photo { height: 88vh; min-height: 560px; }
  .hero-box { left: 12px; right: 12px; bottom: 12px; width: auto; padding: 18px; }
  .hero-credit { right: 12px; left: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
  .main-panel { scroll-behavior: auto; }
}