/* SPINE / Sandevistan — a dark, neon, high-contrast page with the same bones as the aerial-manipulation page. */
:root {
  --bg: #07090d;
  --bg2: #0b0f15;
  --panel: #0f1520;
  --panel2: #131b28;
  --line: #22304a;
  --ink: #e9eff6;
  --soft: #a9b7c8;
  --faint: #6b7a8e;
  --cyan: #19e6ff;
  --mag: #ff2fd1;
  --yel: #ffe34d;
  --grn: #3dff9a;
  --org: #ff8a3d;
  --accent: var(--cyan);
  --display: "Orbitron", "Rajdhani", "Segoe UI", system-ui, sans-serif;
  --head: "Rajdhani", "Segoe UI", system-ui, sans-serif;
  --sans: "Source Sans 3", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --wide: 1180px;
  --part-color: var(--cyan);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; background: var(--bg); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.65;
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(255, 47, 209, 0.14), transparent 60%),
    radial-gradient(900px 500px at 90% 10%, rgba(25, 230, 255, 0.12), transparent 60%),
    var(--bg);
  position: relative;
  overflow-x: hidden;
}
/* animated grid floor + scanlines */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    linear-gradient(rgba(25, 230, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 230, 255, 0.07) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.25) 40%, rgba(0, 0, 0, 0.6));
  animation: grid-drift 24s linear infinite;
}
body::after {
  content: "";
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background: repeating-linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
}
@keyframes grid-drift { from { background-position: 0 0, 0 0; } to { background-position: 0 48px, 48px 0; } }
@media (prefers-reduced-motion: reduce) { body::before { animation: none; } }

a { color: var(--cyan); text-decoration-color: rgba(25, 230, 255, 0.4); }
a:hover { text-decoration-color: var(--cyan); text-shadow: 0 0 10px rgba(25, 230, 255, 0.5); }
img, video, canvas { max-width: 100%; display: block; }
code { font-family: var(--mono); font-size: 0.86em; background: var(--panel2); padding: 1px 6px; border-radius: 4px; border: 1px solid var(--line); }
b { color: var(--ink); }

.wrap { max-width: var(--wide); margin: 0 auto; padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); }

/* Navigation */
.nav { position: sticky; top: 0; z-index: 10; background: rgba(7, 9, 13, 0.82); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav::after { content: ""; display: block; height: 2px; background: linear-gradient(90deg, var(--cyan), var(--mag), var(--yel), var(--cyan)); background-size: 300% 100%; animation: hue-slide 8s linear infinite; }
@keyframes hue-slide { to { background-position: 300% 0; } }
.nav-inner { max-width: var(--wide); margin: 0 auto; padding: 10px max(20px, env(safe-area-inset-right, 0px)) 10px max(20px, env(safe-area-inset-left, 0px)); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px 20px; }
.brand { text-decoration: none; font-family: var(--display); font-weight: 700; font-size: 16px; letter-spacing: 0.12em; color: var(--cyan); text-shadow: 0 0 12px rgba(25, 230, 255, 0.55); }
.brand-sub { color: var(--faint); font-family: var(--mono); font-weight: 400; letter-spacing: 0; font-size: 13px; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 18px; }
.nav a { font-family: var(--head); font-weight: 600; font-size: 16px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--soft); text-decoration: none; }
.nav a:hover, .nav a[aria-current="true"] { color: var(--cyan); text-shadow: 0 0 10px rgba(25, 230, 255, 0.6); }

/* Hero */
.hero { padding: 44px 0 10px; }
.hero-inner { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 28px; align-items: center; }
.hero-inner > * { min-width: 0; }
.hero-art svg { width: 100%; height: auto; display: block; }
.byline { margin: 0 0 14px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.date { color: var(--faint); font-family: var(--mono); font-size: 13px; margin-left: 4px; }
.chip { display: inline-block; font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; padding: 3px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--soft); background: rgba(15, 21, 32, 0.8); }
.chip.live { color: var(--grn); border-color: rgba(61, 255, 154, 0.5); box-shadow: 0 0 12px rgba(61, 255, 154, 0.25); position: relative; padding-left: 20px; }
.chip.live::before { content: ""; position: absolute; left: 8px; top: 50%; width: 6px; height: 6px; margin-top: -3px; border-radius: 50%; background: var(--grn); box-shadow: 0 0 8px var(--grn); animation: blink 1.6s ease-in-out infinite; }
@keyframes blink { 50% { opacity: 0.25; } }
h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(30px, 4.4vw, 54px);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink);
  position: relative;
  text-shadow: 0 0 18px rgba(25, 230, 255, 0.35);
}
/* glitch: two coloured copies that twitch every 3 seconds */
h1[data-text]::before, h1[data-text]::after { content: attr(data-text); position: absolute; left: 0; top: 0; width: 100%; overflow: hidden; pointer-events: none; opacity: 0; }
h1[data-text]::before { color: var(--mag); clip-path: inset(10% 0 55% 0); animation: glitch-a 3s infinite; }
h1[data-text]::after { color: var(--cyan); clip-path: inset(60% 0 10% 0); animation: glitch-b 3s infinite; }
@keyframes glitch-a { 0%, 84%, 100% { opacity: 0; transform: none; } 86% { opacity: 0.9; transform: translate(-6px, -2px); } 90% { opacity: 0.9; transform: translate(5px, 1px); } 94% { opacity: 0; } }
@keyframes glitch-b { 0%, 86%, 100% { opacity: 0; transform: none; } 88% { opacity: 0.9; transform: translate(6px, 2px); } 92% { opacity: 0.9; transform: translate(-4px, -1px); } 96% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { h1[data-text]::before, h1[data-text]::after { animation: none; } }
.lede { margin: 18px 0 0; font-size: 20px; color: var(--soft); }
.lede b { color: var(--cyan); font-family: var(--display); font-size: 0.85em; letter-spacing: 0.08em; }
.lede-small { margin: 12px 0 0; font-size: 15.5px; color: var(--faint); }
.hero-art { margin: 0; padding: 10px; border: 1px solid var(--line); border-radius: 12px; background: linear-gradient(180deg, rgba(15, 21, 32, 0.9), rgba(11, 15, 21, 0.9)); box-shadow: 0 0 0 1px rgba(25, 230, 255, 0.08), 0 0 40px rgba(25, 230, 255, 0.08) inset; }
/* reflex-arc SVG styling */
.hero-art .node { fill: var(--panel2); stroke: var(--line); stroke-width: 1.5; }
.hero-art .node-cord { stroke: var(--cyan); filter: url(#g); }
.hero-art .node-brain { stroke: var(--mag); filter: url(#g); }
.hero-art .node-sense { stroke: var(--cyan); }
.hero-art .node-muscle { stroke: var(--yel); }
.hero-art .lbl { fill: var(--ink); font-family: var(--head); font-weight: 600; font-size: 15px; letter-spacing: 0.04em; }
.hero-art .lbl-s { fill: var(--faint); font-family: var(--mono); font-size: 10.5px; }
.hero-art .lbl-c { fill: var(--cyan); font-family: var(--mono); font-size: 11.5px; }
.hero-art .lbl-m { fill: var(--mag); font-family: var(--mono); font-size: 11.5px; }
.hero-art .wire { fill: none; stroke-width: 2; stroke-linecap: round; }
.hero-art .wire-sense { stroke: rgba(25, 230, 255, 0.55); }
.hero-art .wire-motor { stroke: rgba(255, 227, 77, 0.6); }
.hero-art .wire-brain { stroke: rgba(255, 47, 209, 0.5); stroke-dasharray: 5 4; }
.hero-art .pulse { filter: url(#g); }
.hero-art .pulse-sense { fill: var(--cyan); }
.hero-art .pulse-motor { fill: var(--yel); }
.hero-art .pulse-brain { fill: var(--mag); }
.hero-art .think { fill: var(--mag); opacity: 0; }
.hero-art .flash { fill: var(--yel); opacity: 0; filter: url(#g); }

/* Parts: collapsed by default; neon bar in each part's colour */
.part-block { margin-top: 16px; }
.part-block:first-of-type, .part-block[open] + .part-block { margin-top: 44px; }
.part { display: block; cursor: pointer; list-style: none; }
.part::marker { content: ""; }
.part::-webkit-details-marker { display: none; }
.part:focus-visible { outline: none; }
.part-head {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  width: calc(100% - 2 * max(20px, env(safe-area-inset-left, 0px)));
  max-width: calc(var(--wide) - 40px);
  margin: 0 auto;
  padding: 20px 24px 18px 28px;
  background: linear-gradient(90deg, rgba(19, 27, 40, 0.95), rgba(15, 21, 32, 0.9));
  border: 1px solid var(--line);
  border-left: 4px solid var(--part-color);
  border-radius: 10px;
  position: relative; overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.part-head::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--part-color) 14%, transparent), transparent); transform: translateX(-100%); transition: transform 0.6s; }
.part:hover .part-head { border-color: var(--part-color); box-shadow: 0 0 24px color-mix(in srgb, var(--part-color) 22%, transparent); transform: translateX(2px); }
.part:hover .part-head::after { transform: translateX(100%); }
.part:focus-visible .part-head { outline: 2px solid var(--part-color); outline-offset: 2px; }
.part-label { display: block; margin: 0; font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--part-color); }
.part-title { margin: 2px 0 0 !important; font-family: var(--display) !important; font-size: clamp(22px, 3.4vw, 34px) !important; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink); }
.part:hover .part-title { color: var(--part-color); text-shadow: 0 0 14px color-mix(in srgb, var(--part-color) 55%, transparent); }
.part-toggle { flex: none; width: 14px; height: 14px; margin-right: 4px; border-right: 3px solid var(--part-color); border-bottom: 3px solid var(--part-color); transform: translateY(-4px) rotate(45deg); transition: transform 0.2s; filter: drop-shadow(0 0 6px var(--part-color)); }
.part-block[open] .part-toggle { transform: translateY(4px) rotate(-135deg); }
@media (prefers-reduced-motion: reduce) { .part-toggle, .part-head, .part-head::after { transition: none; } }

/* Sections */
section { padding-top: 40px; }
h2 { margin: 0 0 14px; font-family: var(--head); font-size: clamp(26px, 3.4vw, 36px); line-height: 1.15; font-weight: 700; letter-spacing: 0.02em; color: var(--ink); text-wrap: balance; }
section h2::before { content: "// "; color: var(--part-color); font-family: var(--mono); font-size: 0.6em; vertical-align: 0.15em; }
h3 { margin: 24px 0 8px; font-family: var(--head); font-size: 22px; line-height: 1.3; font-weight: 700; letter-spacing: 0.02em; }
.sub { margin: -6px 0 16px; color: var(--soft); }
p { margin: 0 0 14px; }

.points { margin: 0; padding-left: 1.1em; display: grid; gap: 12px; }
.points li::marker { color: var(--part-color); }
.points.tight { gap: 6px; }
.refs { margin: 0 0 18px; padding-left: 1.1em; display: grid; gap: 10px; }
.refs span { color: var(--faint); }
.note { margin: 12px 0 0; font-size: 15px; color: var(--soft); }

/* Figures */
.figure { margin: 22px 0 0; }
.figure a { display: block; position: relative; border-radius: 10px; overflow: hidden; }
.figure a::after { content: ""; position: absolute; left: 0; right: 0; top: -40%; height: 30%; background: linear-gradient(to bottom, transparent, rgba(25, 230, 255, 0.10), transparent); opacity: 0; transition: opacity 0.2s; pointer-events: none; }
.figure a:hover::after { opacity: 1; animation: scan 1.2s linear infinite; }
@keyframes scan { to { top: 110%; } }
.figure img { width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--line); background: var(--bg2); box-shadow: 0 0 0 1px rgba(25, 230, 255, 0.06), 0 10px 40px rgba(0, 0, 0, 0.5); }
.figure figcaption { margin-top: 10px; font-size: 15px; color: var(--soft); }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 8px; }
.card { background: linear-gradient(180deg, rgba(19, 27, 40, 0.9), rgba(15, 21, 32, 0.95)); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px 12px; min-width: 0; position: relative; transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s; opacity: 0; transform: translateY(14px); }
.card.in { opacity: 1; transform: none; }
.card:hover { transform: translateY(-3px); border-color: var(--part-color); box-shadow: 0 0 28px color-mix(in srgb, var(--part-color) 20%, transparent); }
.card img { width: 100%; max-height: 240px; object-fit: contain; border-radius: 8px; background: #fff; border: 1px solid var(--line); margin-bottom: 10px; }
.card h3 { margin: 6px 0 6px; font-size: 21px; }
.card p { font-size: 16.5px; margin: 0 0 8px; color: var(--soft); }
.card .when { font-family: var(--mono); font-size: 12px; color: var(--faint); font-weight: 400; margin-left: 6px; letter-spacing: 0.04em; }
.card .gap { color: var(--yel); font-size: 15.5px; border-top: 1px dashed var(--line); padding-top: 8px; }
.card .credit { font-family: var(--mono); font-size: 12px; color: var(--faint); margin: 0; }
.card-wide { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 18px; align-items: center; }
.card-accent { border-color: var(--yel); box-shadow: 0 0 24px rgba(255, 227, 77, 0.12); }
.card-accent h3 { color: var(--yel); }
@media (prefers-reduced-motion: reduce) { .card { opacity: 1; transform: none; transition: none; } }

/* stumbling reaction mini-figure */
.stumble svg { width: 100%; background: var(--bg2); border-radius: 8px; border: 1px solid var(--line); }
.stumble .s-title { fill: var(--ink); font-family: var(--head); font-weight: 700; font-size: 14px; letter-spacing: 0.06em; }
.stumble .s-lbl { fill: var(--cyan); font-family: var(--mono); font-size: 11px; }
.stumble .s-ground { stroke: var(--line); stroke-width: 2; }
.stumble .s-leg { fill: none; stroke: var(--ink); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; }
.stumble .s-leg-b { stroke: var(--cyan); animation: lift 2.4s ease-in-out infinite; transform-origin: 130px 90px; }
.stumble .s-leg-d { stroke: var(--yel); animation: press 2.4s ease-in-out infinite; }
.stumble .s-touch { fill: var(--org); filter: drop-shadow(0 0 6px var(--org)); animation: blink 1.2s ease-in-out infinite; }
@keyframes lift { 0%, 20% { transform: rotate(0deg); } 45%, 60% { transform: rotate(-28deg); } 85%, 100% { transform: rotate(0deg); } }
@keyframes press { 0%, 20% { stroke-width: 4; opacity: 0.5; } 45%, 60% { stroke-width: 9; opacity: 1; } 85%, 100% { stroke-width: 4; opacity: 0.5; } }
@media (prefers-reduced-motion: reduce) { .stumble .s-leg-b, .stumble .s-leg-d, .stumble .s-touch { animation: none; } }

.takeaways { margin-top: 26px; padding: 18px 22px; border: 1px solid var(--line); border-left: 4px solid var(--part-color); border-radius: 10px; background: rgba(15, 21, 32, 0.8); }
.takeaways h3 { margin-top: 0; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 22px; }
.stat { border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; background: rgba(15, 21, 32, 0.8); position: relative; overflow: hidden; }
.stat::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--part-color); box-shadow: 0 0 10px var(--part-color); }
.stat b { display: block; font-family: var(--display); font-size: 28px; line-height: 1.1; color: var(--part-color); letter-spacing: 0.04em; }
.stat span { font-size: 14px; color: var(--soft); }

/* Steps */
.steps { margin: 0; padding-left: 0; list-style: none; counter-reset: step; display: grid; gap: 14px; }
.steps li { counter-increment: step; position: relative; padding: 14px 16px 14px 64px; border: 1px solid var(--line); border-radius: 10px; background: rgba(15, 21, 32, 0.8); }
.steps li::before { content: counter(step, decimal-leading-zero); position: absolute; left: 16px; top: 12px; font-family: var(--display); font-size: 22px; color: var(--part-color); text-shadow: 0 0 12px color-mix(in srgb, var(--part-color) 60%, transparent); }

/* Interactive panels */
.lab { margin-top: 22px; border: 1px solid var(--line); border-radius: 12px; padding: 18px; background: linear-gradient(180deg, rgba(19, 27, 40, 0.9), rgba(11, 15, 21, 0.95)); box-shadow: 0 0 0 1px rgba(25, 230, 255, 0.06); }
.lab h3 { margin-top: 0; }
.lab-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 10px 0; }
.btn { font-family: var(--head); font-weight: 700; font-size: 16px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--bg); background: var(--cyan); border: 0; border-radius: 8px; padding: 9px 16px; cursor: pointer; box-shadow: 0 0 18px rgba(25, 230, 255, 0.4); transition: transform 0.1s, box-shadow 0.2s; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 0 26px rgba(25, 230, 255, 0.7); }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: var(--cyan); border: 1px solid var(--cyan); box-shadow: none; }
.btn.ghost[aria-pressed="true"] { background: var(--cyan); color: var(--bg); box-shadow: 0 0 18px rgba(25, 230, 255, 0.5); }
.btn.mag { background: var(--mag); box-shadow: 0 0 18px rgba(255, 47, 209, 0.4); }
.btn.mag:hover { box-shadow: 0 0 26px rgba(255, 47, 209, 0.7); }
.pad { position: relative; height: 150px; border-radius: 10px; border: 1px dashed var(--line); background: var(--bg2); display: grid; place-items: center; font-family: var(--mono); color: var(--faint); font-size: 15px; cursor: pointer; user-select: none; transition: background 0.05s; }
.pad.armed { border-style: solid; border-color: var(--yel); color: var(--yel); }
.pad.go { background: var(--yel); color: var(--bg); border-color: var(--yel); box-shadow: 0 0 40px rgba(255, 227, 77, 0.6); }
.pad.early { border-color: var(--mag); color: var(--mag); }
.race { display: grid; gap: 8px; margin-top: 12px; font-family: var(--mono); font-size: 14px; }
.race-row { display: grid; grid-template-columns: 170px 1fr 90px; align-items: center; gap: 10px; }
.race-bar { height: 12px; border-radius: 6px; background: var(--panel2); overflow: hidden; }
.race-bar i { display: block; height: 100%; width: 0; border-radius: 6px; transition: width 0.6s cubic-bezier(.2,.8,.2,1); }
.race .you i { background: var(--mag); box-shadow: 0 0 10px var(--mag); }
.race .spine i { background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.race .vla i { background: var(--org); box-shadow: 0 0 10px var(--org); }
.race b { color: var(--ink); }
.sim { width: 100%; height: 320px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg2); }
.legend { display: flex; flex-wrap: wrap; gap: 14px; font-family: var(--mono); font-size: 13px; color: var(--soft); margin-top: 8px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: -1px; }
.readout { font-family: var(--mono); font-size: 14px; color: var(--soft); margin-top: 6px; min-height: 1.4em; }
.readout b { color: var(--cyan); }

footer { margin-top: 64px; padding: 24px 0 40px; border-top: 1px solid var(--line); font-size: 14px; color: var(--faint); font-family: var(--mono); }
footer p { margin: 0; }

/* reel: two looping clips under the title, side by side */
.reel { padding: 22px 0 4px; }
.reel-inner { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.reel-item { margin: 0; min-width: 0; }
.reel-frame { position: relative; aspect-ratio: 16 / 9; max-width: 100%; overflow: hidden; border-radius: 12px; background: #000; border: 1px solid var(--line); box-shadow: 0 0 0 1px var(--reel-color) inset, 0 0 32px -12px var(--reel-color); }
.reel-frame video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; display: block; }
.reel-frame::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: repeating-linear-gradient(180deg, transparent 0 2px, rgba(0, 0, 0, 0.22) 2px 3px); }
.reel-tag { position: absolute; left: 10px; top: 10px; z-index: 1; font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--reel-color); background: rgba(7, 9, 13, 0.8); border: 1px solid currentColor; border-radius: 999px; padding: 2px 10px; text-shadow: 0 0 8px currentColor; }
.reel-item figcaption { margin-top: 10px; font-size: 15.5px; color: var(--soft); }
.reel-item figcaption b { color: var(--ink); font-family: var(--head); font-size: 1.08em; letter-spacing: 0.02em; }
.reel-item .credit { display: block; margin-top: 4px; font-family: var(--mono); font-size: 12px; color: var(--faint); }
@media (max-width: 640px) { .reel-inner { grid-template-columns: minmax(0, 1fr); } }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: minmax(0, 1fr); }
  .cards { grid-template-columns: minmax(0, 1fr); }
  .card-wide { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 720px) {
  body { font-size: 17px; }
  .stats { grid-template-columns: 1fr; }
  .nav ul { gap: 2px 12px; }
  .nav a { font-size: 14px; }
  .race-row { grid-template-columns: 110px 1fr 70px; }
  .sim { height: 260px; }
}