:root {
  color-scheme: dark;
  --ink: #06080a;
  --surface: #0b0d10;
  --surface-raised: #11151a;
  --line: #293038;
  --muted: #98a0aa;
  --white: #f7f9fb;
  --accent: #5ae4a7;
  --accent-dim: #2a7a55;
  --danger: #ff8a78;
  --radius-small: 0.4rem;
  --radius-large: 1.2rem;
  --pad: clamp(1rem, 3vw, 2.5rem);
}

* { box-sizing: border-box; }

html { background: var(--ink); scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  background: var(--ink);
  color: var(--white);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.55;
}
.svg-sprite-host {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}

button, input, select { font: inherit; }
button, select { cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 100;
  padding: .7rem 1rem;
  color: var(--ink);
  background: var(--accent);
  transform: translateY(-180%);
}
.skip-link:focus { transform: translateY(0); }

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

.site-shell, .app { width: min(100%, 1560px); margin: 0 auto; }
.site-shell { border-inline: 1px solid rgba(41, 48, 56, .45); }

/* ── Masthead ─────────────────────────────────── */
.masthead {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem var(--pad);
  border-bottom: 1px solid var(--line);
}

.primary-nav { display: flex; align-items: center; gap: 1.25rem; margin-inline: auto; }
.primary-nav a, .site-footer a, .text-link {
  color: var(--muted);
  text-decoration-thickness: 1px;
  text-underline-offset: .28em;
}
.primary-nav a { text-decoration: none; font-size: .86rem; font-weight: 650; white-space: nowrap; }
.primary-nav a:hover, .primary-nav a[aria-current="page"], .site-footer a:hover, .text-link:hover { color: var(--white); }
.primary-nav a[aria-current="page"] { text-decoration: underline; text-decoration-color: var(--accent); }

.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  color: var(--white);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 760;
  letter-spacing: -.03em;
}

.brand-mark {
  position: relative;
  width: 2rem;
  aspect-ratio: 1;
  border: 1px solid var(--accent);
  border-radius: 50%;
  display: grid;
  place-items: center;
}
.brand-mark::before, .brand-mark::after { content: ""; position: absolute; background: var(--white); }
.brand-mark::before { width: 1px; height: 2.55rem; }
.brand-mark::after { width: 2.55rem; height: 1px; }
.brand-mark i { width: .34rem; aspect-ratio: 1; border-radius: 50%; background: var(--accent); }
.masthead p { margin: 0; color: var(--muted); font-size: .92rem; }
.masthead-tools { display: flex; align-items: center; gap: 1.1rem; }
.language-switch { display: flex; border: 1px solid var(--line); border-radius: var(--radius-small); overflow: hidden; }
.language-switch button, .language-switch a {
  min-width: 4.5rem;
  padding: .48rem .68rem;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: .82rem;
  font-weight: 700;
  text-decoration: none;
  text-align: center;
}
.language-switch button + button, .language-switch a + a { border-left: 1px solid var(--line); }
.language-switch button[aria-pressed="true"], .language-switch a[aria-current="page"] { background: var(--white); color: var(--ink); }

/* ── Controls ─────────────────────────────────── */
.controls {
  padding: clamp(1.3rem, 3.5vh, 2.5rem) var(--pad);
  display: grid;
  grid-template-columns: minmax(18rem, .8fr) minmax(30rem, 1.2fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  align-items: end;
  border-bottom: 1px solid var(--line);
}

.prompt-copy h1 { margin: 0; font-size: clamp(1.7rem, 3.2vw, 3.25rem); line-height: 1; letter-spacing: -.055em; }
.prompt-copy p, .comparison-heading p { margin: .75rem 0 0; color: var(--muted); }

.distance-form {
  display: grid;
  grid-template-columns: minmax(8rem, 1fr) 6.5rem auto;
  align-items: stretch;
  gap: .55rem;
}

.distance-field input, .unit-field select {
  width: 100%;
  height: 4.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  background: var(--surface-raised);
  color: var(--white);
  transition: border-color 200ms ease, box-shadow 200ms ease;
}
.distance-field input { padding: 0 1.15rem; font-size: clamp(1.35rem, 2.3vw, 2rem); font-weight: 650; font-variant-numeric: tabular-nums; }
.unit-field select { padding: 0 .9rem; font-weight: 700; }
.distance-field input:hover, .unit-field select:hover { border-color: #515c67; }
.distance-field input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(90, 228, 167, 0.15); }

.submit-button, .share-button {
  border: 0;
  border-radius: var(--radius-small);
  font-weight: 750;
  transition: color 200ms ease, background-color 200ms ease, border-color 200ms ease, transform 200ms ease;
}
.submit-button {
  min-height: 4.2rem;
  padding: 0 1.3rem;
  background: var(--accent);
  color: #04110b;
  position: relative;
  overflow: hidden;
}
.submit-button::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: opacity 200ms ease;
}
.submit-button:hover { background: #77ecb8; transform: translateY(-1px); }
.submit-button:hover::after { opacity: 1; }
.submit-button:active { transform: translateY(0); }
.form-error { grid-column: 2; margin: .7rem 0 0; color: var(--danger); }

/* ── Experience grid ──────────────────────────── */
.experience-grid { display: grid; grid-template-columns: minmax(0, 1.8fr) minmax(20rem, .7fr); min-height: min(70vh, 740px); border-bottom: 1px solid var(--line); }

.stage {
  position: relative;
  isolation: isolate;
  min-height: 620px;
  overflow: hidden;
  background: var(--surface);
  border-right: 1px solid var(--line);
}

.cosmic-texture {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: url("assets/cosmic-texture.jpg") center/cover no-repeat;
  opacity: 0;
  filter: brightness(1.38) contrast(1.08);
  transform: scale(1.06);
  transition: opacity 1200ms cubic-bezier(0.16, 1, 0.3, 1), transform 8s cubic-bezier(.16, 1, .3, 1);
}
.stage.is-cosmic .cosmic-texture { opacity: .88; transform: scale(1); }

.stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(6,8,10,.08), rgba(6,8,10,.55) 82%, rgba(6,8,10,.92));
  pointer-events: none;
  transition: background 800ms ease;
}
.stage.is-cosmic::before { background: linear-gradient(180deg, rgba(6,8,10,.04), rgba(6,8,10,.28) 76%, rgba(6,8,10,.8)); }

.stage-readout {
  position: absolute;
  top: 1.4rem;
  left: 1.5rem;
  right: 1.5rem;
  z-index: 5;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
  font-size: .82rem;
  font-variant-numeric: tabular-nums;
}
.stage-readout > #stageZone { justify-self: center; }

.stage-focus {
  position: absolute;
  top: 4.2rem;
  left: 1.5rem;
  z-index: 4;
  max-width: min(31rem, calc(100% - 3rem));
}
.focus-title { display: flex; align-items: baseline; gap: .7rem; }
.stage-focus strong { font-size: clamp(1.25rem, 2.2vw, 2rem); letter-spacing: -.04em; }
.stage-focus span { color: var(--muted); font-variant-numeric: tabular-nums; }
.stage-focus p { max-width: 48ch; margin: .28rem 0 0; color: #b8c0c8; font-size: .82rem; line-height: 1.45; }

/* ── Scale world ──────────────────────────────── */
.scale-world {
  --axis-origin: 1.5rem;
  position: absolute;
  inset: 7.2rem 0 2.2rem;
  z-index: 2;
  overflow: hidden;
}
/* Vertical axis baseline */
.scale-world::before {
  content: "";
  position: absolute;
  left: var(--axis-origin);
  bottom: .65rem;
  z-index: 3;
  width: 1px;
  height: 1.75rem;
  background: rgba(247,249,251,.7);
}
/* Horizontal ground line */
.scale-world::after {
  content: "";
  position: absolute;
  left: var(--axis-origin);
  right: 0;
  bottom: 2.4rem;
  z-index: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(247,249,251,.35), rgba(247,249,251,.08) 80%, transparent);
}

/* ── Particle canvas ──────────────────────────── */
.particle-canvas {
  position: absolute;
  inset: 0;
  z-index: 10;
  pointer-events: none;
}

/* ── X-axis ticks ─────────────────────────────── */
.x-axis-ticks {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 1.4rem;
  z-index: 1;
  height: 2rem;
  pointer-events: none;
}

.x-tick {
  position: absolute;
  bottom: 0;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: opacity 300ms ease;
}

.x-tick-line {
  width: 1px;
  background: rgba(247,249,251,0.3);
  display: block;
}

.x-tick.minor .x-tick-line {
  background: rgba(247,249,251,0.15);
}

.x-tick-label {
  margin-top: 3px;
  font-size: 0.6rem;
  color: rgba(247,249,251,0.4);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* ── Y-axis ───────────────────────────────────── */
.scale-y-axis {
  position: absolute;
  left: 1.5rem;
  bottom: 4.6rem;
  z-index: 3;
  width: 4.6rem;
  height: clamp(13.75rem, 42%, 18.75rem);
  border-left: 1px solid rgba(247,249,251,.46);
  pointer-events: none;
  /* The physical gauge stays fixed; JavaScript animates only its numeric range. */
  transition: none;
}
.axis-label {
  position: absolute;
  left: .6rem;
  padding: .12rem .32rem;
  color: #aeb6bf;
  background: rgba(17,21,26,.88);
  font-size: .68rem;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  transform: translateY(-50%);
  border-radius: 2px;
}
.axis-label::before {
  content: "";
  position: absolute;
  top: 50%;
  right: calc(100% + .28rem);
  width: .48rem;
  height: 1px;
  background: rgba(247,249,251,.46);
}
.axis-top { top: 0; color: var(--accent); font-weight: 600; }
.axis-middle { top: 50%; }
.axis-zero { top: 100%; color: var(--muted); }

/* ── Scale objects ────────────────────────────── */
.scale-object {
  position: absolute;
  left: 50%;
  bottom: 2.4rem;
  z-index: 1;
  width: 100px;
  height: 100px;
  color: #737c85;
  transform: translateX(-50%);
  transform-origin: center bottom;
  will-change: left, width, height, opacity;
  transition: color 420ms ease;
}

/* Glow effect behind focus object */
.object-glow {
  position: absolute;
  inset: -30%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(90, 228, 167, 0.12) 0%, transparent 70%);
  opacity: 0;
  transform: scale(.9);
  pointer-events: none;
  transition: opacity 720ms ease, transform 900ms cubic-bezier(.16, 1, .3, 1);
  z-index: -1;
}

.scale-object::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  width: 1px;
  height: 1rem;
  background: currentColor;
  opacity: var(--marker-opacity, 0);
  transform: translateX(-.5px);
}

.scale-object svg {
  display: block;
  width: 100%;
  height: 100%;
  opacity: var(--object-opacity, 0);
  filter: drop-shadow(0 8px 18px rgba(0,0,0,.24));
  transition: filter 420ms ease;
}

.scale-object.is-focus {
  z-index: 100;
  color: var(--white);
}
.scale-object.is-focus svg {
  filter: drop-shadow(0 0 24px rgba(90, 228, 167, 0.25)) drop-shadow(0 8px 18px rgba(0,0,0,.24));
}

/* Previous reference (immediately preceding size): soft contrast on the left */
.scale-object.is-prev {
  z-index: 50;
  color: #a2adb8;
}
.scale-object.is-prev svg {
  filter: grayscale(1) brightness(.8);
}
.scale-object:not(.is-focus) .reference-art { filter: grayscale(1) brightness(.7); }
.scale-object:not(.is-focus):not(.is-prev) .reference-art { opacity: calc(var(--object-opacity, 0) * .2); }
.reference-art image { image-rendering: auto; }
#resultArtwork { width: 6.5rem; height: 6.5rem; }
#resultArtwork svg { width: 100%; height: 100%; }
.media-credits { margin-top: 1rem; max-width: 90ch; font-size: .8rem; line-height: 1.7; }
.media-credits summary { cursor: pointer; padding: .5rem 0; }
.media-credits p { margin: .5rem 0; }
.media-credits ul { max-height: 20rem; overflow: auto; padding-left: 1.2rem; }
.media-credits a { color: inherit; text-underline-offset: .2em; }

/* ── Target marker ────────────────────────────── */
.target-marker {
  display: inline-flex;
  align-items: baseline;
  justify-self: end;
  gap: .38rem;
  padding-left: .55rem;
  border-left: 2px solid var(--accent);
}
.target-marker span, .target-marker strong { white-space: nowrap; }
.target-marker span { color: var(--muted); font-size: .7rem; }
.target-marker strong { color: var(--accent); font-size: .82rem; font-variant-numeric: tabular-nums; }

/* ── Result panel ─────────────────────────────── */
.result {
  min-width: 0;
  padding: clamp(1.6rem, 4vw, 3.25rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #080a0c;
}
.result-value {
  display: block;
  max-width: 100%;
  margin: 0 0 1.1rem;
  color: var(--accent);
  font-size: clamp(2.8rem, 6vw, 6.2rem);
  font-weight: 760;
  line-height: .9;
  letter-spacing: -.07em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.result-reference {
  position: relative;
  width: min(100%, 15rem);
  min-height: 8.2rem;
  margin: -.15rem 0 1.25rem;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid #252c33;
  background:
    linear-gradient(180deg, rgba(31, 37, 44, .54), rgba(10, 12, 15, .9)),
    radial-gradient(circle at 50% 68%, rgba(150, 166, 181, .16), transparent 58%);
}
.result-reference::after {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  bottom: 1.55rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, #66727e 18%, #66727e 82%, transparent);
}
.result-reference svg {
  width: 88%;
  height: 6.5rem;
  overflow: visible;
  filter: grayscale(.25) contrast(1.08) drop-shadow(0 8px 13px rgba(0, 0, 0, .42));
}
.result-reference span {
  position: absolute;
  left: .65rem;
  bottom: .45rem;
  z-index: 1;
  color: #8e99a4;
  font-size: .68rem;
  letter-spacing: .08em;
}

.result h2 { max-width: 17ch; margin: 0; font-size: clamp(1.5rem, 2.5vw, 2.3rem); line-height: 1.18; letter-spacing: -.045em; }
.result-detail { max-width: 36ch; color: var(--muted); margin: 1.2rem 0 1.8rem; }
.ratio-readout { display: flex; align-items: baseline; gap: .7rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.ratio-readout span:first-child { font-size: 1.9rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.ratio-readout span:last-child { color: var(--muted); }
.share-button { align-self: flex-start; margin-top: 2.2rem; padding: .8rem 1rem; background: transparent; color: var(--white); border: 1px solid #4a545f; }
.share-button:hover { border-color: var(--white); }
.share-status { min-height: 1.5rem; margin: .6rem 0 0; color: var(--accent); font-size: .85rem; }

/* ── Comparison section ───────────────────────── */
.comparison { padding: clamp(2rem, 5vw, 4.2rem) var(--pad); display: grid; grid-template-columns: minmax(15rem, .52fr) minmax(20rem, 1.48fr); gap: 3rem; }
.comparison-heading h2 { margin: 0; font-size: 1.15rem; letter-spacing: -.025em; }
.comparison-heading p { font-size: .9rem; }
.comparison-bars { display: grid; gap: 1.1rem; }
.comparison-row { display: grid; grid-template-columns: minmax(8rem, 13rem) 1fr auto; gap: 1rem; align-items: center; }
.comparison-name { min-width: 0; }
.comparison-name strong, .comparison-name span { display: block; }
.comparison-name strong { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.comparison-name span { color: var(--muted); font-size: .78rem; }
.bar-track { height: .72rem; background: #1b2026; overflow: hidden; border-radius: 4px; }
.bar-fill {
  height: 100%;
  width: var(--w);
  background: linear-gradient(90deg, #4a545f, #858f99);
  transform-origin: left;
  border-radius: 4px;
  transition: width 600ms cubic-bezier(0.16, 1, 0.3, 1);
}
.comparison-row.is-input .bar-fill { background: linear-gradient(90deg, var(--accent-dim), var(--accent)); }
.comparison-row.is-input .comparison-name strong { color: var(--accent); }
.comparison-number { color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ── Travel time comparison ───────────────────── */
.travel-times {
  padding: clamp(2.5rem, 6vw, 5.5rem) var(--pad);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(15rem, .52fr) minmax(20rem, 1.48fr);
  column-gap: 3rem;
  row-gap: 1.1rem;
  background: #090b0e;
}
.travel-heading h2 { max-width: 19ch; margin: 0; font-size: clamp(1.55rem, 2.5vw, 2.35rem); line-height: 1.12; letter-spacing: -.045em; }
.travel-heading p { max-width: 34ch; margin: .85rem 0 0; color: var(--muted); }
.travel-list { display: grid; border-top: 1px solid var(--line); }
.travel-row {
  --speed-width: 50%;
  display: grid;
  grid-template-columns: 4.2rem minmax(7rem, .7fr) minmax(9rem, 1fr) auto;
  align-items: center;
  gap: 1rem;
  min-height: 6.7rem;
  padding: .8rem 0;
  border-bottom: 1px solid var(--line);
}
.travel-icon {
  width: 3.5rem;
  height: 3.5rem;
  display: grid;
  place-items: center;
  color: #c3cbd3;
}
.travel-icon svg { width: 100%; height: 100%; }
.travel-mode strong, .travel-mode span { display: block; }
.travel-mode strong { font-size: 1rem; }
.travel-mode span { color: var(--muted); font-size: .82rem; font-variant-numeric: tabular-nums; }
.speed-rail { height: .34rem; background: #20262c; overflow: hidden; }
.speed-rail i { display: block; width: var(--speed-width); height: 100%; background: #7e8993; transform-origin: left; }
.travel-row:last-child .speed-rail i { background: var(--accent); }
.travel-duration { min-width: 8.5rem; text-align: right; font-size: clamp(1.05rem, 1.6vw, 1.45rem); font-weight: 760; font-variant-numeric: tabular-nums; white-space: nowrap; }
.travel-note { grid-column: 2; max-width: 65ch; margin: .2rem 0 0; color: #737d87; font-size: .78rem; }

/* ── Editorial and crawlable content ──────────── */
.art-disclosure { padding: 1.2rem var(--pad) 2rem; color: var(--muted); font-size: .82rem; border-bottom: 1px solid var(--line); }
.art-disclosure > p { max-width: 75ch; margin: 0; }

.home-editorial, .distance-article, .content-page {
  content-visibility: auto;
  contain-intrinsic-size: 1px 1000px;
}
.home-editorial { border-bottom: 1px solid var(--line); }
.editorial-lead {
  display: grid;
  grid-template-columns: minmax(18rem, .72fr) minmax(20rem, 1.28fr);
  gap: clamp(2rem, 7vw, 8rem);
  padding: clamp(4rem, 9vw, 8rem) var(--pad);
  align-items: start;
}
.editorial-lead h2, .article-lead h2, .content-header h1 { margin: 0; font-size: clamp(2rem, 4.7vw, 5.4rem); line-height: .98; letter-spacing: -.06em; }
.editorial-lead p, .article-lead .direct-answer { margin: 0; max-width: 50ch; font-size: clamp(1.12rem, 1.8vw, 1.48rem); line-height: 1.6; color: #c2cad2; }
.fact-strip { margin: 0; padding: 1.6rem var(--pad); display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); background: #090b0e; }
.fact-strip div { padding-inline: 1.25rem; border-left: 1px solid var(--line); }
.fact-strip div:first-child { padding-left: 0; border-left: 0; }
.fact-strip dt { color: var(--muted); font-size: .8rem; }
.fact-strip dd { margin: .2rem 0 0; font-size: clamp(1.05rem, 2vw, 1.45rem); font-weight: 720; }
.method-preview, .converter-preview { padding: clamp(3rem, 7vw, 6rem) var(--pad); max-width: 70rem; }
.method-preview h2, .converter-preview h2, .popular-preview h2 { margin: 0; font-size: clamp(1.6rem, 3vw, 3rem); line-height: 1.05; letter-spacing: -.045em; }
.method-preview p, .converter-preview p, .popular-preview > div p { max-width: 64ch; color: var(--muted); font-size: 1.05rem; }
.text-link { display: inline-block; margin-top: .6rem; color: var(--white); font-weight: 720; }
.popular-preview { padding: clamp(3rem, 7vw, 6rem) var(--pad); border-block: 1px solid var(--line); background: #090b0e; }
.popular-preview > div { display: grid; grid-template-columns: .75fr 1.25fr; gap: 2rem; align-items: start; }
.popular-preview ol { list-style: none; margin: 2.5rem 0 0; padding: 0; border-top: 1px solid var(--line); }
.popular-preview li a { display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: 1.15rem 0; border-bottom: 1px solid var(--line); color: var(--white); text-decoration: none; }
.popular-preview li span { color: var(--muted); font-variant-numeric: tabular-nums; }

.distance-article { border-bottom: 1px solid var(--line); }
.article-lead { display: grid; grid-template-columns: minmax(18rem, .8fr) minmax(20rem, 1.2fr); gap: clamp(2rem, 7vw, 7rem); align-items: end; padding: clamp(4rem, 8vw, 7rem) var(--pad) 3rem; }
.article-kicker { grid-column: 1 / -1; margin: 0 0 -1rem; color: var(--accent); font-size: .82rem; font-weight: 760; }
.article-lead h2 { font-size: clamp(2rem, 4vw, 4.4rem); }
.fact-band { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
.fact-band div { min-width: 0; padding: 1.4rem var(--pad); border-left: 1px solid var(--line); }
.fact-band div:first-child { border-left: 0; }
.fact-band span, .fact-band strong { display: block; }
.fact-band span { color: var(--muted); font-size: .8rem; }
.fact-band strong { margin-top: .1rem; overflow-wrap: anywhere; font-size: clamp(1.3rem, 2.8vw, 2.9rem); font-variant-numeric: tabular-nums; letter-spacing: -.04em; }
.article-split { display: grid; grid-template-columns: 1.35fr .65fr; gap: clamp(2rem, 7vw, 7rem); padding: clamp(3rem, 7vw, 6rem) var(--pad); }
.article-split h2, .travel-table h2, .related-links h2, .prose-section h2, .distance-group h2 { margin: 0 0 1.2rem; font-size: clamp(1.35rem, 2.2vw, 2.1rem); letter-spacing: -.035em; }
.article-split aside { padding-left: 1.5rem; border-left: 1px solid var(--accent-dim); color: var(--muted); }
.article-split aside p { max-width: 46ch; }
.reference-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.reference-list li { display: grid; grid-template-columns: minmax(10rem, .65fr) 1fr; column-gap: 1.5rem; padding: 1.2rem 0; border-bottom: 1px solid var(--line); }
.reference-list span { color: var(--accent); font-variant-numeric: tabular-nums; }
.reference-list p { grid-column: 2; margin: .3rem 0 0; color: var(--muted); }
.travel-table { padding: clamp(3rem, 7vw, 6rem) var(--pad); background: #090b0e; border-block: 1px solid var(--line); }
.table-wrap { overflow-x: auto; }
.travel-table table { width: 100%; min-width: 36rem; border-collapse: collapse; text-align: left; }
.travel-table th, .travel-table td { padding: 1rem .5rem; border-bottom: 1px solid var(--line); }
.travel-table thead th { color: var(--muted); font-size: .8rem; }
.travel-table td { font-variant-numeric: tabular-nums; }
.table-note { color: var(--muted); font-size: .82rem; }
.related-links { padding: clamp(3rem, 7vw, 6rem) var(--pad); }
.related-links a { display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: 1rem 0; border-top: 1px solid var(--line); color: var(--white); text-decoration: none; }
.related-links strong { color: var(--muted); font-variant-numeric: tabular-nums; }

.content-page { min-height: 68vh; border-bottom: 1px solid var(--line); }
.content-header { display: grid; grid-template-columns: minmax(18rem, .8fr) minmax(20rem, 1.2fr); gap: clamp(2rem, 7vw, 7rem); padding: clamp(4rem, 9vw, 8rem) var(--pad) clamp(3rem, 6vw, 5rem); border-bottom: 1px solid var(--line); align-items: end; }
.content-header h1 { font-size: clamp(2.5rem, 6vw, 6rem); }
.content-header p { max-width: 48ch; margin: 0; color: #c2cad2; font-size: clamp(1.05rem, 1.7vw, 1.35rem); }
.prose-section { width: min(100% - 2 * var(--pad), 52rem); margin: 0 auto; padding: clamp(3rem, 7vw, 6rem) 0; }
.prose-section h2:not(:first-child) { margin-top: 3rem; }
.prose-section p { max-width: 70ch; color: #bcc4cc; font-size: 1.04rem; line-height: 1.8; }
.prose-section a { color: var(--white); }
.distance-group { padding: clamp(2.5rem, 6vw, 5rem) var(--pad); border-bottom: 1px solid var(--line); }
.distance-group ol { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.distance-group a { display: grid; grid-template-columns: 1fr auto; gap: 2rem; padding: 1.2rem 0; color: var(--white); text-decoration: none; border-bottom: 1px solid var(--line); align-items: center; }
.distance-group span { display: grid; gap: .35rem; }
.distance-group small { max-width: 72ch; color: var(--muted); font-size: .88rem; }
.distance-group b { color: var(--accent); font-variant-numeric: tabular-nums; white-space: nowrap; }

.converter-tool { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; padding: clamp(3rem, 7vw, 6rem) var(--pad); border-bottom: 1px solid var(--line); }
.converter-tool form { display: grid; grid-template-columns: 1fr auto auto; gap: .6rem; align-items: end; }
.converter-tool label { display: grid; gap: .45rem; color: var(--muted); font-size: .85rem; }
.converter-tool input { width: 100%; min-height: 4rem; padding: 0 1rem; border: 1px solid var(--line); border-radius: var(--radius-small); background: var(--surface-raised); color: var(--white); font-size: 1.4rem; }
.converter-unit { min-width: 4rem; min-height: 4rem; display: grid; place-items: center; border: 1px solid var(--line); color: var(--muted); }
.converter-tool button { min-height: 4rem; padding: 0 1.2rem; border: 0; border-radius: var(--radius-small); background: var(--accent); color: var(--ink); font-weight: 760; }
.converter-result { padding: 1rem 0 1rem 2rem; border-left: 1px solid var(--line); }
.converter-result span, .converter-result strong { display: block; }
.converter-result span { color: var(--muted); font-size: .82rem; }
.converter-result strong { margin-top: .3rem; font-size: clamp(2rem, 4vw, 4rem); line-height: 1; letter-spacing: -.05em; overflow-wrap: anywhere; }
.converter-result p { margin: .7rem 0 0; color: var(--accent); font-variant-numeric: tabular-nums; }

.site-footer { display: grid; grid-template-columns: .7fr 1.3fr; gap: 2rem; padding: 2rem var(--pad) 3rem; color: var(--muted); font-size: .82rem; }
.footer-brand { display: grid; gap: .4rem; margin: 0; }
.footer-brand strong { color: var(--white); font-size: 1rem; }
.site-footer nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .7rem 1.2rem; }
.ad-slot { min-height: 8rem; margin: 1rem var(--pad); display: grid; place-items: center; border: 1px dashed #4c555e; color: var(--muted); }

/* ── Responsive ───────────────────────────────── */
@media (max-width: 880px) {
  .controls, .comparison, .travel-times { grid-template-columns: 1fr; gap: 1.35rem; }
  .experience-grid { grid-template-columns: 1fr; }
  .stage { border-right: 0; border-bottom: 1px solid var(--line); min-height: 55vh; }
  .result { min-height: 390px; }
  .travel-note { grid-column: 1; }
  .masthead { flex-wrap: wrap; }
  .primary-nav { order: 3; width: 100%; overflow-x: auto; padding-top: .7rem; border-top: 1px solid var(--line); }
  .editorial-lead, .article-lead, .content-header, .article-split, .converter-tool { grid-template-columns: 1fr; }
  .popular-preview > div { grid-template-columns: 1fr; }
  .article-split aside { padding: 1.5rem 0 0; border-left: 0; border-top: 1px solid var(--accent-dim); }
  .site-footer { grid-template-columns: 1fr; }
  .site-footer nav { justify-content: flex-start; }
}

@media (max-width: 620px) {
  .masthead { min-height: 62px; }
  .masthead-tools > p { display: none; }
  .language-switch button, .language-switch a { min-width: 3.8rem; padding-inline: .5rem; }
  .controls { padding-top: 1.4rem; }
  .distance-form { grid-template-columns: 1fr 5.5rem; }
  .submit-button { grid-column: 1 / -1; }
  .stage { min-height: 520px; }
  .stage-focus { top: 3.7rem; left: 1rem; right: 1rem; }
  .stage-focus strong { font-size: 1.2rem; }
  .stage-focus p { font-size: .76rem; }
  .scale-world { --axis-origin: 1rem; inset-inline: 0; bottom: 2.2rem; }
  .scale-y-axis { left: 1rem; bottom: 4.6rem; height: 14.5rem; }
  .stage-readout { left: 1rem; right: 1rem; grid-template-columns: auto 1fr; }
  .stage-readout > #stageZone { display: none; }
  .result-value { font-size: clamp(3.2rem, 17vw, 5rem); }
  .result-reference { width: min(100%, 13.5rem); min-height: 7.5rem; }
  .comparison-row { grid-template-columns: minmax(7rem, 1fr) 1.2fr; }
  .comparison-number { grid-column: 1; font-size: .82rem; }
  .bar-track { grid-column: 2; grid-row: 1 / span 2; }
  .travel-row { grid-template-columns: 3.7rem 1fr auto; gap: .75rem; }
  .speed-rail { grid-column: 2 / -1; }
  .travel-duration { min-width: 0; font-size: 1rem; }
  .masthead-tools > p { display: none; }
  .primary-nav { gap: 1rem; }
  .fact-strip, .fact-band { grid-template-columns: 1fr; }
  .fact-strip div, .fact-band div { padding: 1rem 0; margin-inline: var(--pad); border-left: 0; border-top: 1px solid var(--line); }
  .fact-strip div:first-child, .fact-band div:first-child { border-top: 0; }
  .reference-list li { grid-template-columns: 1fr; }
  .reference-list p { grid-column: 1; }
  .distance-group a { grid-template-columns: 1fr; gap: .65rem; }
  .converter-tool form { grid-template-columns: 1fr 4rem; }
  .converter-tool button { grid-column: 1 / -1; }
  .converter-result { padding: 1.5rem 0 0; border-left: 0; border-top: 1px solid var(--line); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}