/* =========================================================================
   MobilityMachines.com – "First Light"
   Cinematic deep-carbon base with a warm amber-to-ember dawn accent: the cool
   machine ground, the warm human energy at the joints. Sora (display) /
   Manrope (body) / JetBrains Mono (telemetry labels). Premium, hopeful,
   engineered – futuristic but human, never clinical or military.
   ========================================================================= */

:root {
  --void:     #0b0d12;   /* page */
  --void-2:   #0d1016;
  --panel:    #12151c;   /* surfaces */
  --panel-2:  #171b23;
  --ink:      #eef1f6;   /* text */
  --ink-2:    #a6b0be;   /* muted body */
  --ink-3:    #828d9e;   /* meta (AA on void) */
  --line:     #1f2430;   /* hairlines */
  --line-2:   #2c3340;

  --amber:     #ff9d3c;  /* primary accent – powered warmth */
  --amber-2:   #ffb761;
  --amber-deep:#e07d1c;
  --amber-ink: #241200;  /* dark text on amber fills */
  --amber-glow: rgba(255,157,60,.5);
  --amber-wash: rgba(255,157,60,.10);
  --ember:     #ff6a5a;  /* secondary – dawn coral (glows + gradients) */
  --ember-glow: rgba(255,106,90,.45);

  --maxw: 1200px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 14px;

  --display: "Sora", system-ui, sans-serif;
  --body:    "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, "Courier New", monospace;

  --ease: cubic-bezier(.2,.7,.2,1);
  --shadow: 0 2px 8px rgba(0,0,0,.4), 0 30px 60px -30px rgba(0,0,0,.8);
  --dawn: linear-gradient(100deg, var(--amber-2), var(--amber) 40%, var(--ember));
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--body);
  color: var(--ink);
  background: var(--void);
  font-size: clamp(1rem, 0.97rem + 0.2vw, 1.08rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: var(--amber); text-decoration: none; }
a:hover { color: var(--amber-2); }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; }
::selection { background: var(--amber); color: var(--amber-ink); }

/* ---- type ---- */
h1,h2,h3,h4 { font-family: var(--display); font-weight: 600; line-height: 1.08; letter-spacing: -0.02em; color: var(--ink); }
.display { font-family: var(--display); font-weight: 600; font-size: clamp(2.5rem, 1.4rem + 4.6vw, 5.6rem); line-height: 1.0; letter-spacing: -0.03em; }
.dawn { background: var(--dawn); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { font-size: clamp(1.15rem, 1.02rem + 0.7vw, 1.5rem); line-height: 1.5; color: var(--ink-2); font-weight: 400; }
.muted { color: var(--ink-2); }

.kicker { display: inline-flex; align-items: center; gap: 9px; font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--amber); font-weight: 500; }
.kicker::before { content: ""; width: 22px; height: 1px; background: var(--amber); opacity: .8; }
.kicker--plain { color: var(--ink-3); }
.kicker--plain::before { background: var(--ink-3); }

/* ---- layout ---- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.container--narrow { max-width: 800px; }
.container--wide { max-width: 1340px; }

.section { padding-block: clamp(60px, 9vw, 140px); position: relative; }
.section--tight { padding-block: clamp(44px, 6vw, 88px); }
.section--panel { background: var(--void-2); border-block: 1px solid var(--line); }
.section__head { max-width: 64ch; margin-bottom: clamp(30px, 5vw, 60px); }
.section__head.is-center { margin-inline: auto; text-align: center; }
.section__head h2 { font-size: clamp(2rem, 1.3rem + 2.6vw, 3.6rem); margin-top: 14px; }
.section__head p { margin-top: 16px; color: var(--ink-2); font-size: 1.1rem; }

.stack > * + * { margin-top: 1.2rem; }
.mt-s{margin-top:1rem} .mt-m{margin-top:1.8rem} .mt-l{margin-top:clamp(2.2rem,4vw,3.4rem)}
.center { text-align: center; }
.rule { border: 0; border-top: 1px solid var(--line); }

/* ---- background fx ---- */
.gridlines { position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px; mask-image: radial-gradient(120% 80% at 50% 0%, #000 30%, transparent 75%); }
.glow { position: absolute; border-radius: 50%; filter: blur(72px); pointer-events: none; z-index: 0; }
.glow--amber { background: var(--amber-glow); opacity: .24; }
.glow--ember { background: var(--ember-glow); opacity: .22; }

/* honesty chips */
.chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.chip { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--ink-2); background: var(--panel); border: 1px solid var(--line); border-radius: 999px; padding: 8px 15px; }
.chip svg { width: 15px; height: 15px; color: var(--amber); }

/* =======================================================================
   Header / nav
   ======================================================================= */
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--amber); color: var(--amber-ink); padding: 10px 16px; z-index: 200; font-weight: 700; }
.skip-link:focus { left: 12px; top: 12px; }

.site-header { position: sticky; top: 0; z-index: 100; background: color-mix(in srgb, var(--void) 80%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 72px; }

.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand__mark { width: 34px; height: 34px; flex: none; }
.brand__word { font-family: var(--display); font-weight: 600; font-size: 1.24rem; letter-spacing: -0.02em; }
.brand__word b { color: var(--amber); font-weight: 600; }

.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav__list { list-style: none; padding: 0; display: flex; align-items: center; gap: 2px; }
.site-nav__list a { display: inline-block; font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-2); padding: 9px 14px; border-radius: 8px; }
.site-nav__list a:hover { color: var(--ink); background: var(--amber-wash); }
.site-nav__list a.is-active { color: var(--amber); }
.site-nav__cta a { color: var(--amber-ink) !important; background: var(--amber); padding: 9px 18px !important; border-radius: 999px; font-weight: 700; }
.site-nav__cta a:hover { background: var(--amber-2); }
.site-nav__toggle { display: none; width: 42px; height: 42px; flex-direction: column; justify-content: center; gap: 5px; align-items: center; border-radius: 8px; }
.site-nav__toggle-bar { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* =======================================================================
   Buttons
   ======================================================================= */
.btn { display: inline-flex; align-items: center; gap: 10px; font-family: var(--body); font-weight: 700; font-size: 0.98rem; padding: 13px 24px; border-radius: 999px; border: 1px solid transparent; transition: background .2s var(--ease), color .2s, border-color .2s, transform .2s, box-shadow .2s; }
.btn:hover { transform: translateY(-1px); color: inherit; }
.btn .arrow { transition: transform .2s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }
.btn--amber { background: var(--amber); color: var(--amber-ink); box-shadow: 0 0 0 0 var(--amber-glow); }
.btn--amber:hover { background: var(--amber-2); color: var(--amber-ink); box-shadow: 0 10px 34px -10px var(--amber-glow); }
.btn--ghost { border-color: var(--line-2); color: var(--ink); }
.btn--ghost:hover { border-color: var(--amber); color: var(--amber); }
.btn--lg { padding: 16px 30px; font-size: 1.04rem; }

.tlink { font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.04em; color: var(--amber); display: inline-flex; align-items: center; gap: 7px; }
.tlink .arrow { transition: transform .2s var(--ease); }
.tlink:hover .arrow { transform: translateX(3px); }

/* =======================================================================
   Hero
   ======================================================================= */
.hero { position: relative; overflow: hidden; padding-top: clamp(36px,5vw,72px); padding-bottom: clamp(48px,7vw,96px); }
.hero__inner { position: relative; z-index: 2; text-align: center; }
.hero__head { max-width: 16ch; margin: 12px auto 0; }
.hero__lede { max-width: 58ch; margin: clamp(18px,2.5vw,28px) auto 0; }
.hero__actions { margin-top: clamp(24px,3vw,36px); display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.hero__note { margin-top: 18px; font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.06em; color: var(--ink-3); text-transform: uppercase; }
.hero__stage { position: relative; margin-top: clamp(30px,4.5vw,60px); }
.hero__arc { position: absolute; left: 50%; bottom: -6%; transform: translateX(-50%); width: min(1000px, 108vw); aspect-ratio: 2 / 1; border-radius: 50%; border: 1px solid var(--line-2); border-bottom: 0; opacity: .6;
  mask-image: linear-gradient(#000, transparent 72%); -webkit-mask-image: linear-gradient(#000, transparent 72%); }
.hero__glow { width: min(720px,92vw); height: min(520px,64vw); left: 50%; top: 46%; transform: translate(-50%,-50%); background: var(--amber-glow); opacity: .18; }
.hero__frame { position: relative; z-index: 2; width: min(880px, 100%); margin-inline: auto; border-radius: 20px; overflow: hidden; border: 1px solid var(--line-2); box-shadow: var(--shadow); }
.hero__frame::after { content: ""; position: absolute; inset: 0; pointer-events: none; box-shadow: inset 0 0 0 1px rgba(255,255,255,.03), inset 0 -80px 80px -60px rgba(11,13,18,.9); }
.hero__frame img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }

/* spec ticker under hero */
.ticker { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 28px; margin-top: clamp(26px,3vw,40px); font-family: var(--mono); font-size: 0.78rem; color: var(--ink-2); position: relative; z-index: 2; }
.ticker span { display: inline-flex; align-items: center; gap: 8px; }
.ticker b { color: var(--ink); font-weight: 600; }
.ticker .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 8px var(--amber-glow); }

/* =======================================================================
   Pillars
   ======================================================================= */
.pillar-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(250px,100%),1fr)); gap: clamp(16px,2vw,22px); }
.pillar { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(22px,2.6vw,30px); position: relative; overflow: hidden; transition: border-color .2s, transform .2s; }
.pillar:hover { border-color: var(--line-2); transform: translateY(-2px); }
.pillar__icon { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 11px; background: var(--amber-wash); color: var(--amber); margin-bottom: 16px; }
.pillar__icon svg { width: 24px; height: 24px; }
.pillar h3 { font-size: 1.3rem; }
.pillar p { margin-top: 8px; color: var(--ink-2); font-size: 0.98rem; }
.pillar__n { position: absolute; top: 18px; right: 20px; font-family: var(--mono); font-size: 0.72rem; color: var(--ink-3); }

/* =======================================================================
   Feature rows (tech + lifestyle)
   ======================================================================= */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px,5vw,72px); align-items: center; }
.feature + .feature { margin-top: clamp(48px,7vw,110px); }
.feature--flip .feature__media { order: -1; }
.feature__media { position: relative; }
.feature__media img { width: 100%; border-radius: var(--radius); border: 1px solid var(--line); box-shadow: var(--shadow); }
.feature__media .glow { width: 62%; height: 62%; left: 28%; top: 30%; opacity: .18; }
.feature__tag { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--amber); }
.feature h2 { font-size: clamp(1.7rem,1.2rem+2vw,2.8rem); margin-top: 12px; }
.feature__summary { font-size: 1.15rem; color: var(--ink); margin-top: 14px; }
.feature__body { margin-top: 16px; color: var(--ink-2); }
.feature__body p + p { margin-top: 1em; }

/* =======================================================================
   Specs
   ======================================================================= */
.spec-note { font-family: var(--mono); font-size: 0.76rem; color: var(--ink-3); border: 1px dashed var(--line-2); border-radius: 10px; padding: 12px 16px; display: inline-flex; align-items: center; gap: 6px; }
.spec-note svg { width: 16px; height: 16px; color: var(--amber); }
.spec-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(280px,100%),1fr)); gap: clamp(16px,2vw,22px); }
.spec-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(20px,2.4vw,28px); }
.spec-card h3 { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--amber); font-weight: 500; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.spec-row { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.spec-row:last-child { border-bottom: 0; }
.spec-row .label { color: var(--ink-2); font-size: 0.95rem; }
.spec-row .value { font-family: var(--mono); color: var(--ink); font-size: 0.9rem; text-align: right; }

/* =======================================================================
   Use cases
   ======================================================================= */
.use-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(240px,100%),1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.use { background: var(--panel); padding: clamp(22px,2.6vw,30px); transition: background .2s; }
.use:hover { background: var(--panel-2); }
.use__icon { color: var(--amber); margin-bottom: 14px; }
.use__icon svg { width: 26px; height: 26px; }
.use h3 { font-size: 1.18rem; }
.use p { margin-top: 7px; color: var(--ink-2); font-size: 0.95rem; }

/* =======================================================================
   Roadmap
   ======================================================================= */
.roadmap { display: grid; gap: 0; }
.road { display: grid; grid-template-columns: 150px 1fr; gap: clamp(16px,3vw,40px); padding: clamp(20px,2.6vw,30px) 0; border-top: 1px solid var(--line); position: relative; }
.road:last-child { border-bottom: 1px solid var(--line); }
.road__when { font-family: var(--mono); font-size: 0.86rem; color: var(--ink-2); display: flex; align-items: center; gap: 10px; }
.road__dot { width: 9px; height: 9px; border-radius: 50%; border: 2px solid var(--line-2); flex: none; }
.road--done .road__dot { background: var(--ink-3); border-color: var(--ink-3); }
.road--active .road__dot { background: var(--amber); border-color: var(--amber); box-shadow: 0 0 10px var(--amber-glow); }
.road--active .road__when { color: var(--amber); }
.road h3 { font-size: 1.24rem; }
.road p { margin-top: 6px; color: var(--ink-2); }
.road__state { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); margin-top: 8px; display: inline-block; }
.road--active .road__state { color: var(--amber); }

/* =======================================================================
   Forms
   ======================================================================= */
.form-wrap { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(24px,3.5vw,44px); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2); }
.field .req { color: var(--amber); }
.field input, .field select, .field textarea { font-family: var(--body); font-size: 1rem; color: var(--ink); background: var(--void); border: 1px solid var(--line-2); border-radius: 10px; padding: 13px 15px; width: 100%; transition: border-color .15s, box-shadow .15s; }
.field input::placeholder, .field textarea::placeholder { color: var(--ink-3); }
.field textarea { min-height: 130px; resize: vertical; line-height: 1.6; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--amber); box-shadow: 0 0 0 3px var(--amber-wash); }
.field__hint { font-size: 0.85rem; color: var(--ink-3); }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { display: none; padding: 14px 18px; border-radius: 10px; font-weight: 600; margin-bottom: 18px; }
.form-status.is-show { display: block; }
.form-status--ok { background: rgba(255,157,60,.1); color: var(--amber-2); border: 1px solid rgba(255,157,60,.3); }
.form-status--err { background: rgba(255,120,120,.1); color: #ff9b9b; border: 1px solid rgba(255,120,120,.3); }
.form-note { font-family: var(--mono); font-size: 0.74rem; color: var(--ink-3); }

.inline-form { display: flex; gap: 10px; flex-wrap: wrap; }
.inline-form input { flex: 1 1 240px; }

/* =======================================================================
   FAQ
   ======================================================================= */
.faq-list { display: grid; gap: 12px; max-width: 860px; }
.faq { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.faq__q { width: 100%; text-align: left; display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 20px 22px; font-family: var(--display); font-weight: 500; font-size: 1.08rem; color: var(--ink); }
.faq__q .sign { font-family: var(--mono); color: var(--amber); transition: transform .3s var(--ease); flex: none; }
.faq.is-open .faq__q .sign { transform: rotate(45deg); }
.faq__a { max-height: 0; overflow: hidden; visibility: hidden; transition: max-height .35s var(--ease), visibility .35s; }
.faq.is-open .faq__a { visibility: visible; }
.faq__a-inner { padding: 0 22px 22px; color: var(--ink-2); max-width: 72ch; }

/* =======================================================================
   Page head + prose
   ======================================================================= */
.page-head { padding-top: clamp(44px,6vw,84px); padding-bottom: clamp(24px,3vw,40px); position: relative; overflow: hidden; }
.crumbs { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.06em; color: var(--ink-3); margin-bottom: 18px; }
.crumbs a { color: var(--ink-3); }
.crumbs a:hover { color: var(--amber); }
.page-head h1 { font-size: clamp(2.2rem,1.5rem+3.4vw,4.2rem); }
.page-head__lede { margin-top: 16px; max-width: 62ch; }

.prose { max-width: 68ch; }
.prose h2 { font-size: clamp(1.5rem,1.2rem+1.4vw,2.1rem); margin-top: 2em; }
.prose p { margin-top: 1em; color: var(--ink-2); }
.prose p:first-child { margin-top: 0; }

/* =======================================================================
   CTA band + footer
   ======================================================================= */
.cta-band { position: relative; overflow: hidden; background: var(--void-2); border-top: 1px solid var(--line); }
.cta-band__inner { position: relative; z-index: 2; text-align: center; }
.cta-band h2 { font-size: clamp(2rem,1.4rem+2.6vw,3.4rem); }
.cta-band p { color: var(--ink-2); margin-top: 14px; max-width: 54ch; margin-inline: auto; }
.cta-band__actions { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

.site-footer { background: var(--void-2); border-top: 1px solid var(--line); padding-block: clamp(46px,6vw,72px) 0; }
.site-footer__inner { display: grid; grid-template-columns: 1.8fr 1fr 1fr; gap: clamp(28px,4vw,56px); }
.site-footer__tag { margin-top: 14px; max-width: 40ch; color: var(--ink-2); font-size: 0.96rem; }
.site-footer__col h3 { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px; }
.link-list { list-style: none; padding: 0; display: grid; gap: 10px; }
.link-list a { color: var(--ink-2); font-size: 0.96rem; }
.link-list a:hover { color: var(--amber); }
.site-footer__base { margin-top: clamp(40px,5vw,60px); border-top: 1px solid var(--line); padding-block: 20px; }
.site-footer__base-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; font-family: var(--mono); font-size: 0.72rem; color: var(--ink-3); }

/* =======================================================================
   Reveal + focus
   ======================================================================= */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"]{transition-delay:.08s}.reveal[data-delay="2"]{transition-delay:.16s}.reveal[data-delay="3"]{transition-delay:.24s}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}
:where(a,button,input,select,textarea):focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

/* =======================================================================
   Responsive
   ======================================================================= */
@media (max-width: 860px) {
  .feature { grid-template-columns: 1fr; gap: 24px; }
  .feature--flip .feature__media { order: 0; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; }
  .site-footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
  .site-nav__toggle { display: flex; }
  .site-nav__pill { position: fixed; inset: 72px 0 auto 0; background: var(--void-2); border-bottom: 1px solid var(--line); padding: 14px var(--gutter) 22px; transform: translateY(-130%); transition: transform .3s var(--ease); box-shadow: var(--shadow); }
  .site-nav.is-open .site-nav__pill { transform: translateY(0); }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 4px; }
  .site-nav__list a { padding: 13px 12px; font-size: 0.9rem; }
  .site-nav__cta { margin-top: 8px; }
  .site-nav__cta a { display: inline-block; text-align: center; }
  .road { grid-template-columns: 1fr; gap: 8px; }
  .form-grid { grid-template-columns: 1fr; }
  .site-footer__inner { grid-template-columns: 1fr; }
}
@media (min-width: 681px) { .site-nav__toggle { display: none; } }