:root {
  --white: #FFFFFF;
  --mist: #F4F6F7;
  --ink: #0B0D10;
  --graphite: #2B3138;
  --slate: #5B6470;
  --ash: #8A929C;
  --teal: #007E8A;
  --teal-hover: #006B75;
  --teal-bright: #0096A2;
  --night: #0B0D10;
  --night-raised: #151A20;
  --night-band: #1D232B;

  --bg: var(--white);
  --surface: var(--mist);
  --text: var(--ink);
  --body: var(--graphite);
  --muted: var(--slate);
  --dim: var(--ash);
  --line: rgba(11, 13, 16, 0.10);
  --line-strong: rgba(11, 13, 16, 0.22);
  --accent: var(--teal);
  --accent-soft: rgba(0, 126, 138, 0.10);
  --nav-bg: rgba(255, 255, 255, 0.88);
  --pulse: rgba(11, 13, 16, 0.3);

  --radius: 6px;
  --radius-sm: 4px;
  --max: 1180px;
  --display: "Montserrat", "Inter", system-ui, sans-serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  color-scheme: light;
}

.on-dark {
  --bg: var(--night);
  --surface: var(--night-raised);
  --text: #EEF1F4;
  --body: #C9D0D7;
  --muted: #9AA4AF;
  --dim: #6B7580;
  --line: rgba(255, 255, 255, 0.10);
  --line-strong: rgba(255, 255, 255, 0.22);
  --accent: var(--teal-bright);
  --accent-soft: rgba(0, 150, 162, 0.16);
  background: var(--bg);
  color: var(--text);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: var(--night);
    --surface: var(--night-raised);
    --text: #EEF1F4;
    --body: #C9D0D7;
    --muted: #9AA4AF;
    --dim: #6B7580;
    --line: rgba(255, 255, 255, 0.10);
    --line-strong: rgba(255, 255, 255, 0.22);
    --accent: var(--teal-bright);
    --accent-soft: rgba(0, 150, 162, 0.16);
    --nav-bg: rgba(11, 13, 16, 0.86);
    --pulse: rgba(238, 241, 244, 0.3);
    color-scheme: dark;
  }

  :root:not([data-theme="light"]) .on-dark { --bg: var(--night-raised); --surface: var(--night-band); }
  :root:not([data-theme="light"]) .icon-sun { display: block; }
  :root:not([data-theme="light"]) .icon-moon { display: none; }
}

:root[data-theme="dark"] {
  --bg: var(--night);
  --surface: var(--night-raised);
  --text: #EEF1F4;
  --body: #C9D0D7;
  --muted: #9AA4AF;
  --dim: #6B7580;
  --line: rgba(255, 255, 255, 0.10);
  --line-strong: rgba(255, 255, 255, 0.22);
  --accent: var(--teal-bright);
  --accent-soft: rgba(0, 150, 162, 0.16);
  --nav-bg: rgba(11, 13, 16, 0.86);
  --pulse: rgba(238, 241, 244, 0.3);
  color-scheme: dark;
}

:root[data-theme="dark"] .on-dark { --bg: var(--night-raised); --surface: var(--night-band); }
:root[data-theme="dark"] .icon-sun { display: block; }
:root[data-theme="dark"] .icon-moon { display: none; }

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

svg { display: block; max-width: 100%; height: auto; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }

h1, h2, h3 {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

h3 { font-weight: 700; letter-spacing: -0.01em; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--mono); }
.accent { color: var(--accent); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.eyebrow .dot {
  flex: none;
  align-self: flex-start;
  margin-top: 0.55em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text);
}

.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s;
}

.nav.scrolled {
  background: var(--nav-bg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-color: var(--line);
}

.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 68px; }
.brand { display: inline-flex; align-items: center; color: var(--text); }
.wordmark { height: 20px; width: auto; fill: currentColor; }

.nav-links { display: flex; gap: 28px; font-size: 14.5px; font-weight: 500; color: var(--muted); }
.nav-links a { transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav.menu-open { background: var(--bg); border-color: var(--line); }

.menu-toggle {
  display: none;
  align-items: center;
  height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.2s;
}

.menu-toggle:hover { border-color: var(--text); }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s;
}

.icon-btn:hover { border-color: var(--text); }
.theme-toggle svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.icon-sun { display: none; }

.theme-row {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 16px 0 4px;
  border: 0;
  background: none;
  color: var(--text);
  font-family: var(--display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-align: left;
  cursor: pointer;
}

.theme-row svg { width: 20px; height: 20px; }

.mobile-menu { max-height: calc(100svh - 68px); overflow-y: auto; border-top: 1px solid var(--line); background: var(--bg); }
.mobile-menu .wrap { display: grid; padding-top: 8px; padding-bottom: 16px; }
.mobile-menu a { padding: 14px 0; border-bottom: 1px solid var(--line); font-family: var(--display); font-size: 20px; font-weight: 700; letter-spacing: -0.01em; }
.mobile-menu a:last-child { border-bottom: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--teal);
  color: var(--white);
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.btn:hover { background: var(--teal-hover); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.btn-ghost:hover { background: transparent; border-color: var(--text); }
.btn-small { height: 38px; padding: 0 16px; font-size: 14px; }

.hero { padding: 136px 0 0; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  gap: 56px;
  min-height: calc(100svh - 300px);
}

.goal-tag {
  display: block;
  width: fit-content;
  margin: 32px 0 0;
  padding: 4px 9px;
  border: 1px solid var(--text);
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
}

.hero h1 { font-size: clamp(42px, 5.8vw, 76px); line-height: 1.04; letter-spacing: -0.03em; margin: 14px 0 24px; }
.lede { max-width: 30em; color: var(--muted); font-size: clamp(17px, 1.5vw, 20px); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

.status-line {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s;
}

.status-line:hover { color: var(--text); }
.status-line .dot { flex: none; align-self: flex-start; margin-top: 0.55em; width: 7px; height: 7px; border-radius: 50%; background: var(--text); animation: pulse 2s ease-out infinite; }

.blueprint {
  margin: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
}

.bp .arm-o line { stroke: var(--text); stroke-width: 10; stroke-linecap: round; }
.bp .arm-i line { stroke: var(--bg); stroke-width: 7.5; stroke-linecap: round; }
.bp .rotor-disc { fill: none; stroke: var(--line-strong); stroke-dasharray: 3 5; }
.bp .prop ellipse { fill: var(--text); fill-opacity: 0.18; }
.bp .prop { transform-box: fill-box; transform-origin: center; animation: spin 2.6s linear infinite; }
.bp .prop.ccw { animation-direction: reverse; }
.bp .hub { fill: var(--bg); stroke: var(--text); stroke-width: 1.5; }
.bp .body { fill: var(--bg); stroke: var(--text); stroke-width: 1.5; }
.bp .tank { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1.5; }
.bp .tank-hatch line { stroke: var(--accent); stroke-opacity: 0.45; }
.bp .fc { fill: var(--bg); stroke: var(--text); stroke-width: 1.2; }
.bp .fc-fin line { stroke: var(--line-strong); }
.bp .batt { fill: var(--line); stroke: var(--text); stroke-width: 1.2; }
.bp .cline { fill: none; stroke: var(--muted); stroke-width: 1; }
.bp .cdot { fill: var(--text); }
.bp .tb rect, .bp .tb line { fill: none; stroke: var(--line-strong); }
.bp-label { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.06em; fill: var(--text); }
.bp-sub, .bp-tb { font-family: var(--mono); font-size: 11px; fill: var(--muted); }

@keyframes spin { to { transform: rotate(360deg); } }

.specs { display: grid; grid-template-columns: 3fr 1fr; gap: 20px; margin-top: 72px; }

.spec-label {
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.spec-row {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 1px;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}

.spec { display: flex; flex-direction: column-reverse; padding: 24px 28px; background: var(--bg); }
.spec dd { margin: 0; font-family: var(--mono); font-size: clamp(28px, 3vw, 38px); line-height: 1.1; color: var(--text); }
.spec dd span { margin-left: 6px; font-size: 14px; color: var(--muted); }
.spec dt { margin-top: 8px; font-size: 13.5px; color: var(--muted); }

.section { padding: 128px 0; border-top: 1px solid var(--line); }
.section.on-dark { border-top: 0; }
.hero + .section { margin-top: 128px; }
.section-head { max-width: 780px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(32px, 4.2vw, 52px); margin: 18px 0 20px; }
.section-head p:not(.eyebrow) { max-width: 38em; color: var(--muted); font-size: 18px; }

.card {
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.card-title {
  margin-bottom: 20px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.card-note { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14.5px; }

.why-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 20px; }
.big-num { font-family: var(--display); font-size: clamp(56px, 7vw, 88px); font-weight: 800; line-height: 1; letter-spacing: -0.04em; }
.big-num-label { margin: 10px 0 36px; color: var(--muted); }

.bars { display: grid; gap: 22px; }
.bar-meta { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 8px; font-size: 14.5px; font-weight: 500; }
.bar-meta .mono { color: var(--muted); font-size: 13.5px; font-weight: 400; }
.bar { position: relative; height: 10px; border-radius: 2px; background: var(--line); overflow: hidden; }
.fill { display: block; height: 100%; width: var(--w); min-width: 4px; border-radius: 2px; transition: width 1.6s cubic-bezier(0.2, 0.7, 0.1, 1) 0.2s; }
.fill.h2 { background: var(--accent); }
.fill.batt { background: var(--text); }
.range { position: absolute; top: 0; bottom: 0; left: var(--from); right: 0; border-radius: 0 2px 2px 0; background: var(--accent); opacity: 0.28; transition: opacity 0.8s ease 1.4s; }
.js .reveal:not(.in) .fill { width: 0; }
.js .reveal:not(.in) .range { opacity: 0; }

.derivation { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); }
.derivation .card-title { margin-bottom: 12px; }
.steps { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; counter-reset: step; }
.steps li { display: grid; grid-template-columns: 22px 1fr; font-family: var(--mono); font-size: 12.5px; line-height: 1.5; color: var(--body); }
.steps li::before { counter-increment: step; content: counter(step) "."; color: var(--muted); }
.derivation + .card-note { margin-top: 20px; }

.chart { width: 100%; }
.ch-axis { stroke: var(--line-strong); }
.ch-grid { stroke: var(--line); stroke-dasharray: 2 4; }
.ch-shade { fill: var(--accent); fill-opacity: 0.06; }
.ch-target { stroke: var(--muted); stroke-dasharray: 4 5; }
.ch-h2 { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linecap: round; }
.ch-batt { fill: none; stroke: var(--text); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.ch-tick { font-family: var(--mono); font-size: 11px; fill: var(--muted); }
.ch-lbl { font-family: var(--mono); font-size: 12px; font-weight: 500; }
.ch-lbl.batt { fill: var(--text); }
.ch-lbl.h2 { fill: var(--accent); }
.draw { stroke-dasharray: 1; stroke-dashoffset: 0; transition: stroke-dashoffset 1.8s ease 0.3s; }
.js .reveal:not(.in) .draw { stroke-dashoffset: 1; }

.apps-block { margin-top: 72px; }
.apps-block .card-title { margin-bottom: 24px; }
.apps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.app { padding-top: 24px; border-top: 1px solid var(--line-strong); }
.app-tag { margin-bottom: 18px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.app h3 { margin-bottom: 10px; font-size: 20px; line-height: 1.2; }
.app p:not(.app-tag) { color: var(--muted); font-size: 15px; }

.drivetrain-head { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 48px; margin-bottom: 56px; }
.drivetrain-head .section-head { margin-bottom: 0; }
.emblem { margin: 0; }
.emblem img { width: auto; height: 260px; }
.emblem figcaption { margin-top: 14px; font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--dim); text-align: center; }

.diagram { padding: 28px; overflow-x: auto; }
.diagram .card-title { margin-bottom: 18px; }
.diagram svg { width: 100%; min-width: 760px; }
.diagram .dg-v { display: none; }
.dg-v .dg-label { font-size: 14px; }
.dg-v .dg-sub { font-size: 14px; }
.dg-node { fill: var(--bg); stroke: var(--line-strong); stroke-width: 1.2; }
.dg-node.hl { stroke: var(--text); stroke-width: 1.6; }
.dg-node.h2 { stroke: var(--accent); }
.dg-node.batt { stroke: var(--muted); stroke-dasharray: 5 4; }
.dg-label { font-family: var(--mono); font-size: 13px; font-weight: 500; letter-spacing: 0.06em; fill: var(--text); }
.dg-sub { font-family: var(--sans); font-size: 13px; fill: var(--muted); }
.dg-tag { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; fill: var(--dim); }
.dg-region { fill: none; stroke: var(--line-strong); stroke-dasharray: 4 6; }
.dg-region-label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; fill: var(--muted); }
.dg-bus { stroke: var(--text); stroke-width: 3; stroke-linecap: round; }
.dg-ctrl { fill: none; stroke: var(--dim); stroke-width: 2; stroke-dasharray: 1 5; stroke-linecap: round; }

.flow { fill: none; stroke-width: 2.5; stroke-dasharray: 7 7; animation: flow 1.1s linear infinite; }
.flow.h2 { stroke: var(--accent); }
.flow.dc { stroke: var(--text); }
.flow.peak { stroke: var(--muted); stroke-dasharray: 3 5; animation: flow-peak 2.8s ease-in-out infinite alternate; }

@keyframes flow { to { stroke-dashoffset: -14; } }
@keyframes flow-peak { from { stroke-dashoffset: 0; } to { stroke-dashoffset: 32; } }

.points {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.point { padding: 28px; border-right: 1px solid var(--line); }
.point:last-child { border-right: 0; }
.point-num { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.point h3 { margin: 14px 0 10px; font-size: 18px; line-height: 1.25; }
.point p:not(.point-num) { color: var(--muted); font-size: 15px; }

.roadmap { display: grid; grid-template-columns: repeat(5, 1fr); margin: 0; padding: 0; list-style: none; }
.phase { position: relative; padding: 36px 24px 0 0; border-top: 2px solid var(--line-strong); }

.phase::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 0;
  width: 14px;
  height: 14px;
  border: 2px solid var(--line-strong);
  border-radius: 50%;
  background: var(--bg);
}

.phase.done { border-top-color: var(--text); }
.phase.done::before { border-color: var(--text); background: var(--text); }

.phase.now::after {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 70%;
  height: 2px;
  background: linear-gradient(90deg, var(--text), transparent);
}

.phase.now::before { border-color: var(--text); background: var(--bg); animation: pulse 2s ease-out infinite; }

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 var(--pulse); }
  70%, 100% { box-shadow: 0 0 0 12px transparent; }
}

.phase-num { font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; color: var(--muted); }
.phase h3 { margin: 10px 0; font-size: 20px; line-height: 1.2; }
.phase p:not(.phase-num) { color: var(--muted); font-size: 15px; }

.status {
  display: inline-block;
  margin-top: 18px;
  padding: 4px 9px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.done .status { color: var(--text); background: var(--surface); }
.now .status { color: var(--bg); background: var(--text); border-color: var(--text); }
.goal .status { color: var(--accent); border-color: var(--accent); }

.supported {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
  margin-bottom: 20px;
  padding: 22px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.supported .card-title { margin: 0; }
.supported-row { display: flex; flex-wrap: wrap; gap: 12px; }

.supporter {
  display: inline-flex;
  align-items: center;
  height: 56px;
  padding: 0 22px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  font-family: var(--display);
  font-size: 15px;
  font-weight: 700;
}

.partner-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.list { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.list li { display: flex; align-items: baseline; gap: 14px; padding-bottom: 14px; border-bottom: 1px solid var(--line); font-size: 16.5px; }
.list li:last-child { padding-bottom: 0; border-bottom: 0; }
.list li::before { content: ""; flex: none; width: 7px; height: 7px; border-radius: 1px; background: var(--text); transform: translateY(-2px); }
.list.give li::before { background: transparent; border: 1.5px solid var(--text); }

.cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 20px;
  padding: 40px;
  border-radius: var(--radius);
}

.cta h3 { font-size: clamp(26px, 3vw, 36px); font-weight: 800; letter-spacing: -0.025em; }
.cta p { margin-top: 8px; color: var(--muted); }

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

.roles li {
  display: grid;
  grid-template-columns: 64px minmax(220px, 340px) 1fr;
  align-items: baseline;
  gap: 0 24px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.role-num { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.roles h3 { font-size: 19px; line-height: 1.25; }
.roles p { color: var(--muted); font-size: 15.5px; }

.join-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 20px; margin-top: 40px; }
.join-cta .btn { cursor: default; }
.soon { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.04em; color: var(--muted); }

.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.2s;
}

.contact-card[href]:hover { border-color: var(--text); }
.contact-card .card-title { margin: 0; }
.contact-value { font-family: var(--display); font-size: 20px; font-weight: 700; letter-spacing: -0.01em; }
.contact-card .status { align-self: flex-start; margin-top: 6px; }

.footer { padding: 72px 0 40px; font-size: 14px; }
.footer-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; color: var(--muted); }
.footer-wordmark { width: 100%; margin-top: 56px; fill: var(--text); }

.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.8s ease, transform 0.8s ease; }
.js .reveal.in { opacity: 1; transform: none; }

@media (min-width: 1061px) {
  .mobile-menu { display: none !important; }
}

@media (max-width: 1060px) {
  .nav-links { display: none; }
  .menu-toggle { display: inline-flex; }
  .nav-actions .theme-toggle { display: none; }
}

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; min-height: 0; }
  .specs { grid-template-columns: 1fr; gap: 16px; }
  .why-grid, .partner-grid { grid-template-columns: 1fr; }
  .drivetrain-head { grid-template-columns: 1fr; gap: 40px; }
  .emblem { justify-self: start; }
  .emblem img { height: 200px; }
  .points { grid-template-columns: 1fr 1fr; }
  .point:nth-child(2n) { border-right: 0; }
  .point:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .apps { grid-template-columns: 1fr 1fr; row-gap: 40px; }
  .roadmap { grid-template-columns: 1fr; }
  .phase { padding: 0 0 40px 32px; border-top: 0; border-left: 2px solid var(--line-strong); }
  .phase:last-child { padding-bottom: 0; }
  .phase::before { top: 2px; left: -8px; }
  .phase.done { border-left-color: var(--text); }
  .phase.now::after { top: 0; left: -2px; width: 2px; height: 70%; background: linear-gradient(180deg, var(--text), transparent); }
  .roles li { grid-template-columns: 48px 1fr; }
  .roles li p { grid-column: 2; margin-top: 6px; }
}

@media (max-width: 880px) {
  .diagram { overflow-x: visible; }
  .diagram .dg-h { display: none; }
  .diagram .dg-v { display: block; min-width: 0; max-width: 420px; margin: 0 auto; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .hero { padding-top: 108px; }
  .hero + .section { margin-top: 88px; }
  .section { padding: 88px 0; }
  .section-head { margin-bottom: 40px; }
  .section-head p:not(.eyebrow) { font-size: 16.5px; }
  .blueprint { padding: 12px; }
  .bp .tb-block { display: none; }
  .bp-label { font-size: 15px; }
  .bp-sub { font-size: 13px; }
  .ch-tick { font-size: 15px; }
  .ch-lbl { font-size: 16px; }
  .spec-row { grid-auto-flow: row; grid-template-columns: 1fr; }
  .spec { flex-direction: row-reverse; justify-content: space-between; align-items: baseline; gap: 16px; padding: 16px 20px; }
  .spec dt { margin-top: 0; text-align: right; }
  .spec dd { font-size: 26px; }
  .card { padding: 24px; }
  .diagram { padding: 20px; }
  .emblem img { height: 170px; }
  .points, .apps { grid-template-columns: 1fr; }
  .point { border-right: 0; border-bottom: 1px solid var(--line); }
  .point:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .point:last-child { border-bottom: 0; }
  .supported { padding: 20px; }
  .supporter { height: 48px; padding: 0 16px; font-size: 14px; }
  .cta { padding: 28px 24px; }
  .cta .btn { width: 100%; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer { padding-top: 56px; }
  .footer-top { flex-direction: column; }
  .footer-wordmark { margin-top: 40px; }
}

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