/* Hallmark · genre: atmospheric · macrostructure: Feature Stack · theme: custom (vibe: "a cyan beam across a dark room" · paper oklch(15.5% 0.014 235) · accent oklch(78% 0.125 213) cyan · Geist + Geist)
 * axes: dark / geometric-sans / cool · enrichment: real screenshots + Tier-A CSS overlays · nav: N10 floating-on-scroll morph · footer: Ft5 statement
 * motion: GSAP ScrollTrigger (hero widen · route draw · feature sync · setup rail · footer line), all off under prefers-reduced-motion
 */
@font-face { font-family: Geist; src: url('./assets/geist-latin.woff2') format('woff2'); font-style: normal; font-weight: 100 900; font-display: swap; }

/* ---------- Tokens ---------- */
:root {
  color-scheme: light;
  --color-paper: oklch(97.4% 0.005 225);
  --color-paper-2: oklch(99.3% 0.003 225);
  --color-paper-3: oklch(94.2% 0.009 225);
  --color-ink: oklch(21% 0.02 235);
  --color-ink-2: oklch(42% 0.02 235);
  --color-ink-3: oklch(53% 0.018 235);
  --color-rule: oklch(89.5% 0.01 228);
  --color-accent: oklch(52% 0.105 215);
  --color-accent-strong: oklch(45% 0.1 218);
  --color-accent-ink: oklch(98.5% 0.01 215);
  --color-accent-soft: oklch(93.5% 0.035 213);
  --color-bloom: oklch(80% 0.11 213 / 0.22);
  --color-nav: oklch(97.4% 0.005 225 / 0.86);
  --color-pill: oklch(99.3% 0.003 225 / 0.82);
  --color-screen: oklch(17% 0.012 235);
  --color-rec: oklch(63% 0.2 27);
  --color-focus: oklch(55% 0.13 213);
  --shadow-lift: 0 1px 2px oklch(22% 0.03 235 / 0.06), 0 18px 48px -18px oklch(22% 0.03 235 / 0.28);
  --shadow-pill: 0 8px 24px -12px oklch(22% 0.03 235 / 0.3);

  --font-display: Geist, system-ui, sans-serif;
  --font-body: Geist, system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Menlo, monospace;

  --space-3xs: 0.25rem; --space-2xs: 0.5rem; --space-xs: 0.75rem; --space-sm: 1rem;
  --space-md: 1.5rem; --space-lg: 2rem; --space-xl: 3rem; --space-2xl: 4.5rem; --space-3xl: 7rem; --space-4xl: 10rem;

  --text-xs: 0.75rem; --text-sm: 0.875rem; --text-base: 1rem; --text-md: 1.125rem; --text-lg: 1.375rem;
  --text-xl: 1.75rem; --text-2xl: clamp(2rem, 1.2rem + 2.6vw, 3.25rem);
  --text-display: clamp(3.4rem, 1.4rem + 7.6vw, 8.25rem);
  --text-statement: clamp(2rem, 1rem + 4.2vw, 4.5rem);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-micro: 120ms; --dur-short: 220ms; --dur-long: 420ms;

  --radius-control: 999px; --radius-card: 22px; --radius-media: 14px;
  --rule-hair: 1px;
  --page: min(1240px, calc(100% - 2 * var(--gutter)));
  --gutter: 48px;
  --nav-h: 60px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --color-paper: oklch(15.5% 0.014 235);
    --color-paper-2: oklch(19.5% 0.016 235);
    --color-paper-3: oklch(24% 0.018 235);
    --color-ink: oklch(95.5% 0.007 220);
    --color-ink-2: oklch(77% 0.016 228);
    --color-ink-3: oklch(64% 0.016 228);
    --color-rule: oklch(29% 0.018 235);
    --color-accent: oklch(78% 0.125 213);
    --color-accent-strong: oklch(85% 0.105 210);
    --color-accent-ink: oklch(19% 0.04 225);
    --color-accent-soft: oklch(27% 0.045 220);
    --color-bloom: oklch(70% 0.13 213 / 0.2);
    --color-nav: oklch(15.5% 0.014 235 / 0.82);
    --color-pill: oklch(21% 0.016 235 / 0.8);
    --color-focus: oklch(82% 0.12 213);
    --shadow-lift: 0 1px 0 oklch(100% 0 0 / 0.04) inset, 0 24px 60px -24px oklch(5% 0.02 235 / 0.8);
    --shadow-pill: 0 8px 24px -12px oklch(5% 0.02 235 / 0.7);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --color-paper: oklch(15.5% 0.014 235);
  --color-paper-2: oklch(19.5% 0.016 235);
  --color-paper-3: oklch(24% 0.018 235);
  --color-ink: oklch(95.5% 0.007 220);
  --color-ink-2: oklch(77% 0.016 228);
  --color-ink-3: oklch(64% 0.016 228);
  --color-rule: oklch(29% 0.018 235);
  --color-accent: oklch(78% 0.125 213);
  --color-accent-strong: oklch(85% 0.105 210);
  --color-accent-ink: oklch(19% 0.04 225);
  --color-accent-soft: oklch(27% 0.045 220);
  --color-bloom: oklch(70% 0.13 213 / 0.2);
  --color-nav: oklch(15.5% 0.014 235 / 0.82);
  --color-pill: oklch(21% 0.016 235 / 0.8);
  --color-focus: oklch(82% 0.12 213);
  --shadow-lift: 0 1px 0 oklch(100% 0 0 / 0.04) inset, 0 24px 60px -24px oklch(5% 0.02 235 / 0.8);
  --shadow-pill: 0 8px 24px -12px oklch(5% 0.02 235 / 0.7);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { overflow-x: clip; }
html { scroll-padding-top: calc(var(--nav-h) + var(--space-lg)); }
body {
  margin: 0; background: var(--color-paper); color: var(--color-ink);
  font: 400 var(--text-base)/1.6 var(--font-body); -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
img { display: block; max-width: 100%; height: auto; }
svg { display: block; fill: currentColor; flex-shrink: 0; }
p, h1, h2, h3, h4, figure, ol { margin: 0; }
h1, h2, h3, h4 { font-family: var(--font-display); font-style: normal; text-wrap: balance; overflow-wrap: anywhere; min-width: 0; }
p { text-wrap: pretty; }
a, button, summary { -webkit-tap-highlight-color: transparent; }
:is(a, button, summary):focus-visible { outline: 2px solid var(--color-focus); outline-offset: 4px; border-radius: 6px; }
::selection { background: var(--color-accent); color: var(--color-accent-ink); }
[hidden] { display: none !important; }
.container { width: var(--page); margin-inline: auto; }
.icon { width: 20px; height: 20px; }
.muted { color: var(--color-ink-3); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link {
  position: fixed; top: 12px; left: 12px; z-index: 40; transform: translateY(-160%);
  background: var(--color-accent); color: var(--color-accent-ink); padding: 12px 18px; border-radius: var(--radius-control);
}
.skip-link:focus { transform: none; }

/* ---------- Controls ---------- */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-xs);
  min-height: 52px; padding: 0 var(--space-md); border: var(--rule-hair) solid transparent; border-radius: var(--radius-control);
  background: var(--color-accent); color: var(--color-accent-ink); font-size: var(--text-sm); font-weight: 600; white-space: nowrap;
  transition: background-color var(--dur-short) var(--ease-out), transform var(--dur-micro) var(--ease-out), border-color var(--dur-short) var(--ease-out);
}
.button:hover { background: var(--color-accent-strong); transform: translateY(-1px); }
.button:active { transform: translateY(0); }
.button .icon { width: 18px; height: 18px; }
.button-small { min-height: 40px; padding: 0 var(--space-sm); font-size: 13px; gap: var(--space-2xs); }
.button-small .icon { width: 16px; height: 16px; }
.button-wide { width: 100%; }
.button-outline { background: transparent; color: var(--color-ink); border-color: var(--color-rule); }
.button-outline:hover { background: var(--color-paper-3); border-color: var(--color-ink-3); }
.text-link { display: inline-flex; align-items: center; gap: var(--space-2xs); font-size: var(--text-sm); font-weight: 600; white-space: nowrap; }
.text-link .icon { width: 18px; height: 18px; transition: transform var(--dur-short) var(--ease-out); }
.text-link:hover { color: var(--color-accent); }
.text-link:hover .icon { transform: translate(2px, -2px); }
.icon-button {
  display: grid; place-items: center; width: 40px; height: 40px; border: 0; border-radius: var(--radius-control);
  background: transparent; color: var(--color-ink-2); transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out);
}
.icon-button:hover { background: var(--color-paper-3); color: var(--color-ink); }
.theme-sun { display: none; }
[data-theme="dark"] .theme-sun { display: block; }
[data-theme="dark"] .theme-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-sun { display: block; }
  :root:not([data-theme="light"]) .theme-moon { display: none; }
}

/* ---------- Nav · N10: a bar at the top, a floating pill once you scroll ---------- */
.nav { position: fixed; inset: 0 0 auto; z-index: 30; padding-block: 10px; }
.nav::before {
  content: ""; position: absolute; inset: 0; background: var(--color-nav); border-bottom: var(--rule-hair) solid var(--color-rule);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); transition: opacity var(--dur-long) var(--ease-out);
}
.nav__inner {
  position: relative; width: var(--page); height: var(--nav-h); margin-inline: auto; padding-inline: 14px 10px;
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-md);
  transition: transform var(--dur-long) var(--ease-out);
}
.nav__inner::before {
  content: ""; position: absolute; inset: 0; z-index: -1; border-radius: var(--radius-control);
  background: var(--color-pill); border: var(--rule-hair) solid var(--color-rule); box-shadow: var(--shadow-pill);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); opacity: 0; transition: opacity var(--dur-long) var(--ease-out);
}
.nav.is-floating::before { opacity: 0; }
.nav.is-floating .nav__inner { transform: translateY(6px); }
.nav.is-floating .nav__inner::before { opacity: 1; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-display); font-size: 23px; font-weight: 650; letter-spacing: -0.05em; }
.nav__links { display: flex; gap: var(--space-lg); font-size: var(--text-sm); font-weight: 500; color: var(--color-ink-2); }
.nav__links a { white-space: nowrap; transition: color var(--dur-short) var(--ease-out); }
.nav__links a:hover { color: var(--color-ink); }
.nav__actions { display: flex; align-items: center; gap: var(--space-3xs); }
.nav__actions .button { margin-left: var(--space-2xs); }

/* ---------- Hero ---------- */
.hero { position: relative; padding-top: calc(var(--nav-h) + var(--space-3xl)); }
.hero::before {
  content: ""; position: absolute; z-index: -1; inset: 0 0 auto auto; width: min(900px, 90vw); aspect-ratio: 1;
  background: radial-gradient(closest-side, var(--color-bloom), transparent); transform: translate(18%, -38%); pointer-events: none;
}
.hero-head { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); align-items: end; gap: var(--space-xl); }
h1 { font-size: var(--text-display); font-weight: 600; line-height: 0.94; letter-spacing: -0.06em; }
h1 .line { display: block; overflow: clip; padding-bottom: 0.06em; }
h1 .line > span { display: inline-block; }
.accent-word { color: var(--color-accent); }
.hero-side { padding-bottom: var(--space-2xs); }
.lede { max-width: 30ch; font-size: var(--text-md); line-height: 1.65; color: var(--color-ink-2); }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-md); margin-top: var(--space-lg); }
.hero-stage { margin-top: var(--space-2xl); }
.hero-frame {
  /* The frame keeps the photo's own 3:2 shape so nothing is ever cropped. It
     starts inset to the text column and widens to the window (or 1440px). */
  --g: max(var(--gutter), calc(50% - 620px));
  width: min(100%, 1440px); margin-inline: auto; aspect-ratio: 3 / 2; overflow: hidden; background: var(--color-paper-3);
  clip-path: inset(0 var(--g) 0 var(--g) round var(--radius-card));
}
.hero-image { width: 100%; height: 100%; object-fit: cover; transform-origin: 50% 50%; }
.hero-stage figcaption { margin-top: var(--space-sm); font-size: var(--text-xs); color: var(--color-ink-3); text-align: right; }

/* ---------- Route: Android to every desktop ---------- */
.route { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); align-items: center; gap: var(--space-2xl); padding-block: var(--space-3xl); }
.route h2, .section-head h2, .setup-head h2, .faq-heading h2 { font-size: var(--text-2xl); font-weight: 600; line-height: 1.05; letter-spacing: -0.045em; }
.route-copy p { max-width: 36ch; margin-top: var(--space-md); color: var(--color-ink-2); font-size: var(--text-md); }
.route-map { position: relative; aspect-ratio: 240 / 100; }
.route-lines { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.route-lines path { fill: none; stroke-linecap: round; }
.route-track { stroke: var(--color-rule); stroke-width: 1; }
.route-beam { stroke: var(--color-accent); stroke-width: 1.4; stroke-dasharray: 1; stroke-dashoffset: 0; }
.route-node {
  position: absolute; left: var(--x); top: var(--y); transform: translate(-50%, -50%);
  display: inline-flex; align-items: center; gap: var(--space-2xs); padding: 9px 16px 9px 12px;
  background: var(--color-paper-2); border: var(--rule-hair) solid var(--color-rule); border-radius: var(--radius-control);
  font-size: var(--text-sm); font-weight: 550; white-space: nowrap; box-shadow: var(--shadow-lift);
  transition: border-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out);
}
.route-node .icon { width: 19px; height: 19px; }
.route-source { color: var(--color-accent); border-color: var(--color-accent); }
.route-target.is-lit { border-color: var(--color-accent); }

/* ---------- Feature Stack ---------- */
.stack { padding-block: var(--space-3xl); }
.section-head { max-width: 640px; }
.section-head p { margin-top: var(--space-md); max-width: 52ch; color: var(--color-ink-2); font-size: var(--text-md); }
.stack-body { display: grid; grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr); gap: var(--space-2xl); margin-top: var(--space-xl); }
.stack-list { list-style: none; padding: 0; }
.feature {
  min-height: 58vh; display: flex; flex-direction: column; justify-content: center; padding-block: var(--space-xl);
  transition: opacity var(--dur-long) var(--ease-out);
}
.stack.is-synced .feature:not(.is-active) { opacity: 0.32; }
.feature-icon { width: 30px; height: 30px; color: var(--color-accent); margin-bottom: var(--space-md); }
.feature h3 { font-size: var(--text-xl); font-weight: 600; letter-spacing: -0.035em; line-height: 1.15; }
.feature p { margin-top: var(--space-xs); max-width: 38ch; color: var(--color-ink-2); font-size: var(--text-md); line-height: 1.65; }
.stage-wrap { position: sticky; top: max(calc(var(--nav-h) + var(--space-xl)), calc(50vh - 15vw)); align-self: start; }
.stage-wrap figcaption { margin-top: var(--space-sm); font-size: var(--text-xs); color: var(--color-ink-3); text-align: center; }
.stage {
  position: relative; padding: 11% 17% 7% 5%; border-radius: var(--radius-card); overflow: hidden;
  background: radial-gradient(120% 90% at 85% 0%, var(--color-accent-soft), transparent 60%), var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
}
.stage-screens { position: relative; border-radius: var(--radius-media); overflow: hidden; box-shadow: var(--shadow-lift); outline: 2px solid transparent; outline-offset: 3px; transition: outline-color var(--dur-long) var(--ease-out); }
.stage-desk { width: 100%; }
.stage-grid {
  position: absolute; inset: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); align-items: center; gap: 3%;
  padding: 6% 5%; background: var(--color-screen); opacity: 0; transition: opacity var(--dur-long) var(--ease-out);
}
.stage-grid > * { aspect-ratio: 1 / 2; width: 100%; height: auto; border-radius: 8px; object-fit: cover; transform: translateY(8px); transition: transform var(--dur-long) var(--ease-out); }
.stage-grid > img { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.stage-grid > span:nth-child(2) { background: linear-gradient(170deg, oklch(70% 0.11 205), oklch(36% 0.07 235)); }
.stage-grid > span:nth-child(3) { background: linear-gradient(190deg, oklch(88% 0.03 220), oklch(56% 0.05 230)); }
.stage-grid > span:nth-child(4) { background: linear-gradient(160deg, oklch(46% 0.09 250), oklch(24% 0.03 240)); }
.stage-phone {
  position: absolute; right: 5%; bottom: 5%; width: 19%; border-radius: 14px; border: 3px solid var(--color-screen);
  box-shadow: var(--shadow-lift); transition: transform var(--dur-long) var(--ease-out), opacity var(--dur-long) var(--ease-out);
}
.stage-beam { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.stage-beam path {
  fill: none; stroke: var(--color-accent); stroke-width: 0.3; stroke-linecap: round;
  stroke-dasharray: 1; stroke-dashoffset: 1; opacity: 0;
  transition: stroke-dashoffset 260ms var(--ease-in), opacity 200ms var(--ease-in);
}
.chip {
  position: absolute; top: 3.2%; left: 5%; display: inline-flex; align-items: center; gap: var(--space-2xs);
  padding: 7px 14px 7px 10px; border-radius: var(--radius-control); background: var(--color-paper); border: var(--rule-hair) solid var(--color-rule);
  font-size: var(--text-xs); font-weight: 600; white-space: nowrap; opacity: 0; transform: translateY(6px);
  transition: opacity var(--dur-short) var(--ease-out), transform var(--dur-short) var(--ease-out);
}
.chip .icon { width: 16px; height: 16px; color: var(--color-accent); }
.chip-record { font-family: var(--font-mono); letter-spacing: 0.04em; }
.rec-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--color-rec); }
.bars { display: inline-flex; align-items: end; gap: 2px; height: 14px; }
.bars i { width: 3px; border-radius: 2px; background: var(--color-accent); transform-origin: bottom; }
.bars i:nth-child(1) { height: 45%; } .bars i:nth-child(2) { height: 100%; } .bars i:nth-child(3) { height: 65%; } .bars i:nth-child(4) { height: 85%; }
.stage[data-state="wifi"] .stage-beam path { stroke-dashoffset: 0; opacity: 1; transition: stroke-dashoffset 900ms var(--ease-out) 150ms, opacity 150ms var(--ease-out) 150ms; }
.stage[data-state="wifi"] .chip-wifi,
.stage[data-state="grid"] .chip-grid,
.stage[data-state="record"] .chip-record,
.stage[data-state="sound"] .chip-sound { opacity: 1; transform: none; }
.stage[data-state="grid"] .stage-grid { opacity: 1; }
.stage[data-state="grid"] .stage-grid > * { transform: none; }
.stage[data-state="grid"] .stage-phone { opacity: 0; transform: translateY(12%); }
.stage[data-state="record"] .stage-screens { outline-color: var(--color-rec); }
.stage[data-state="sound"] .stage-phone { transform: translateY(-4%) rotate(-3deg); }

/* ---------- Setup ---------- */
.setup { background: var(--color-paper-2); border-block: var(--rule-hair) solid var(--color-rule); padding-block: var(--space-3xl); }
.setup-grid { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: var(--space-2xl); }
.setup-head { position: sticky; top: calc(var(--nav-h) + var(--space-2xl)); align-self: start; }
.setup-head p { margin: var(--space-md) 0 var(--space-lg); max-width: 34ch; color: var(--color-ink-2); font-size: var(--text-md); }
.steps { position: relative; list-style: none; padding: 0; display: grid; gap: var(--space-2xl); }
.rail { position: absolute; left: 21px; top: 22px; bottom: 22px; width: 2px; background: var(--color-rule); border-radius: 2px; }
.rail-fill { position: absolute; inset: 0; background: var(--color-accent); transform-origin: top; border-radius: inherit; }
.step { position: relative; display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; gap: var(--space-md); align-items: start; }
.step-dot {
  display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; font-weight: 600; font-variant-numeric: tabular-nums;
  background: var(--color-accent); color: var(--color-accent-ink); border: 2px solid var(--color-accent);
  transition: background-color var(--dur-long) var(--ease-out), color var(--dur-long) var(--ease-out), border-color var(--dur-long) var(--ease-out);
}
.steps.is-live .step:not(.is-reached) .step-dot { background: var(--color-paper-2); color: var(--color-ink-3); border-color: var(--color-rule); }
.step h3 { font-size: var(--text-lg); font-weight: 600; letter-spacing: -0.03em; padding-top: 8px; }
.step p { margin-top: var(--space-2xs); max-width: 44ch; color: var(--color-ink-2); line-height: 1.7; }
.step-icon { width: 26px; height: 26px; margin-top: 10px; color: var(--color-ink-3); }

/* ---------- Downloads ---------- */
.downloads { padding-block: var(--space-3xl); }
.download-layout { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.3fr); gap: var(--space-2xl); margin-top: var(--space-xl); align-items: start; }
.android-download {
  position: relative; overflow: hidden; padding: var(--space-lg); border-radius: var(--radius-card);
  background: radial-gradient(90% 70% at 100% 0%, var(--color-accent-soft), transparent 70%), var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
}
.download-card-heading { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-xl); }
.device-label { font-size: var(--text-sm); font-weight: 550; color: var(--color-ink-3); }
.platform-icon { width: 28px; height: 28px; }
.android-mark { margin-bottom: var(--space-md); }
.android-download h3 { font-size: var(--text-xl); font-weight: 600; letter-spacing: -0.04em; }
.android-download > p { margin-top: var(--space-3xs); color: var(--color-ink-2); }
.download-meta { display: block; margin: var(--space-md) 0; font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-ink-3); }
.install-note { margin-top: var(--space-sm); font-size: var(--text-xs); line-height: 1.7; color: var(--color-ink-3); max-width: 36ch; }
.desktop-downloads > .device-label { margin-bottom: var(--space-xs); }
.download-row {
  display: grid; grid-template-columns: 36px minmax(0, 1fr) auto; gap: var(--space-md); align-items: center;
  padding-block: var(--space-md); border-bottom: var(--rule-hair) solid var(--color-rule);
}
.download-copy h4 { font-size: var(--text-lg); font-weight: 600; letter-spacing: -0.035em; }
.download-copy p { font-size: 13px; color: var(--color-ink-3); }
.alternative, .row-note { display: inline-flex; align-items: center; gap: 5px; margin-top: var(--space-2xs); font-size: var(--text-xs); color: var(--color-ink-3); white-space: nowrap; }
.alternative { text-decoration: underline; text-underline-offset: 3px; }
.alternative:hover { color: var(--color-accent); }
.alternative .icon { width: 14px; height: 14px; }
.download-button {
  display: inline-flex; align-items: center; gap: var(--space-xs); padding: 11px 18px; border-radius: var(--radius-control);
  border: var(--rule-hair) solid var(--color-rule); background: var(--color-paper-2); font-size: 13px; font-weight: 600; white-space: nowrap;
  transition: border-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), transform var(--dur-micro) var(--ease-out);
}
.download-button .icon { width: 17px; height: 17px; }
.download-button:hover { border-color: var(--color-accent); color: var(--color-accent); transform: translateY(-1px); }
.download-button:active { transform: none; }
.download-footer { display: flex; justify-content: space-between; align-items: center; gap: var(--space-md); margin-top: var(--space-md); font-size: var(--text-xs); color: var(--color-ink-3); }

/* ---------- FAQ ---------- */
.faq { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.3fr); gap: var(--space-2xl); padding-block: var(--space-2xl) var(--space-3xl); }
.faq-heading > p { margin: var(--space-md) 0 var(--space-2xs); color: var(--color-ink-2); }
.questions { border-top: var(--rule-hair) solid var(--color-rule); }
details { border-bottom: var(--rule-hair) solid var(--color-rule); scroll-margin-top: calc(var(--nav-h) + var(--space-xl)); }
summary {
  list-style: none; display: flex; align-items: center; justify-content: space-between; gap: var(--space-md);
  padding-block: var(--space-md); font-size: var(--text-md); font-weight: 550; letter-spacing: -0.015em; cursor: pointer;
  transition: color var(--dur-short) var(--ease-out);
}
summary::-webkit-details-marker { display: none; }
summary .icon { width: 18px; height: 18px; color: var(--color-ink-3); transition: transform var(--dur-short) var(--ease-out); }
details[open] summary .icon { transform: rotate(45deg); color: var(--color-accent); }
summary:hover { color: var(--color-accent); }
details > p { padding: 0 var(--space-xl) var(--space-md) 0; color: var(--color-ink-2); line-height: 1.8; }
details p a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Open source + footer · Ft5 ---------- */
.open-source {
  display: flex; align-items: center; gap: var(--space-lg); padding: var(--space-xl); border-radius: var(--radius-card);
  background: var(--color-paper-2); border: var(--rule-hair) solid var(--color-rule);
}
.source-icon { width: 40px; height: 40px; color: var(--color-accent); }
.open-source h2 { font-size: var(--text-xl); font-weight: 600; letter-spacing: -0.035em; line-height: 1.2; }
.open-source p { margin-top: var(--space-3xs); color: var(--color-ink-2); }
.open-source .button { margin-left: auto; }
.footer { padding-block: var(--space-4xl) var(--space-lg); }
.footer-line { max-width: 18ch; font-family: var(--font-display); font-size: var(--text-statement); font-weight: 600; line-height: 1.02; letter-spacing: -0.05em; }
.footer-line .w { display: inline-block; }
.footer-meta {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-md) var(--space-xl);
  margin-top: var(--space-2xl); padding-top: var(--space-md); border-top: var(--rule-hair) solid var(--color-rule);
}
.footer-meta .brand { font-size: 20px; }
.footer-meta nav { display: flex; flex-wrap: wrap; gap: var(--space-2xs) var(--space-lg); font-size: 13px; color: var(--color-ink-2); }
.footer-meta nav a { white-space: nowrap; }
.footer-meta nav a:hover, .footer-credit a:hover { color: var(--color-accent); }
.footer-credit { font-size: var(--text-xs); color: var(--color-ink-3); }

/* ---------- Motion: initial states, set before GSAP so the hero never flashes ---------- */
.motion [data-intro] { opacity: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  :root { --gutter: 32px; }
  .nav__links { gap: var(--space-md); }
}
@media (max-width: 899px) {
  :root { --gutter: 20px; --nav-h: 56px; }
  .nav { padding-block: 6px; }
  .nav__links { display: none; }
  .nav__inner { padding-inline: 10px 6px; }
  .hero { padding-top: calc(var(--nav-h) + var(--space-2xl)); }
  .hero-head { grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); }
  .hero-stage { margin-top: var(--space-xl); }
  .route { grid-template-columns: minmax(0, 1fr); gap: var(--space-xl); padding-block: var(--space-3xl) var(--space-2xl); }
  .route-node { padding: 6px 11px 6px 8px; font-size: var(--text-xs); gap: 6px; }
  .route-node .icon { width: 15px; height: 15px; }
  .route-target { left: auto; right: 0; transform: translateY(-50%); }
  .stack-body { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .stage-wrap { order: -1; top: calc(var(--nav-h) + 16px); z-index: 2; padding-block: var(--space-sm) var(--space-2xs); background: var(--color-paper); }
  .stage-wrap figcaption { display: none; }
  .feature { min-height: 46vh; padding-block: var(--space-lg); }
  .setup-grid, .download-layout, .faq { grid-template-columns: minmax(0, 1fr); gap: var(--space-xl); }
  .setup-head { position: static; }
  .open-source { flex-direction: column; align-items: flex-start; padding: var(--space-lg); }
  .open-source .button { margin-left: 0; }
}
@media (max-width: 479px) {
  .nav__actions .icon-button[href] { display: none; }
  .route-node { padding: 5px 9px 5px 7px; font-size: 11px; box-shadow: none; }
  .step { grid-template-columns: 44px minmax(0, 1fr); }
  .step-icon { display: none; }
  .download-row { grid-template-columns: 28px minmax(0, 1fr) auto; gap: var(--space-sm); }
  .download-footer { flex-direction: column; align-items: flex-start; }
  details > p { padding-right: 0; }
  .chip { font-size: 10px; padding: 4px 9px 4px 7px; }
}
@media (max-width: 374px) {
  .nav__actions .button .icon { display: none; }
  .nav__actions { gap: 0; }
  .download-button span { display: none; }
  .download-button { padding: 12px; }
  .hero-actions { gap: var(--space-sm); }
}

@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 150ms !important; animation: none !important; scroll-behavior: auto !important; }
  .stage-phone, .stage-grid > *, .chip, .nav__inner { transform: none !important; }
}
@media (prefers-reduced-transparency: reduce) {
  .nav::before, .nav__inner::before { backdrop-filter: none; -webkit-backdrop-filter: none; }
  :root { --color-nav: var(--color-paper); --color-pill: var(--color-paper-2); }
}