/* =========================================================
   TunnlAi Landing Page
   ========================================================= */
:root {
  --navy: #2D3459;
  --panel: #F2F6FC;
  --dark: #1C1C1D;
  --dark-card: #1F2228;
  --dark-input: #232B36;
  --muted: #999999;
  --muted-2: #92979E;
  --muted-3: #5D646D;
  --muted-light: #B7C4D6;
  --muted-lighter: #C8CDD4;
  --white: #FFFFFF;

  --maxw: 1280px;
  --pad: 96px;           /* gutter for full-width sections (features/footer/beta) */
  /* side-by-side text sits in a viewport half; margins ~17% of that half each side */
  --gutter: clamp(72px, 8.5vw, 200px);
  /* distance from the container's right content edge to the viewport edge,
     used to bleed the locked panel off the right of the screen */
  --bleed-right: max(var(--pad), calc(50vw - (var(--maxw) / 2) + var(--pad)));
  --radius: 16px;
  --ease: cubic-bezier(.4, 0, .2, 1);

  --nav-h: 70px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "DM Sans", system-ui, -apple-system, sans-serif;
  color: var(--navy);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: var(--pad);
}

.ico { width: 16px; height: 16px; flex: none; }

/* ---------- Shared type ---------- */
.section-title {
  font-size: clamp(34px, 4.2vw, 53px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--navy);
}
.section-title--light { color: var(--white); }

.section-sub {
  font-size: clamp(16px, 1.6vw, 18px);
  font-weight: 600;
  color: var(--muted-light);
  margin: 18px 0 0;
  max-width: 560px;
}

/* ---------- Tag / eyebrow ---------- */
.tag {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid rgba(45, 52, 89, .16);
  font-size: 16px;
  font-weight: 700;
  color: var(--muted-3);
  line-height: 1;
}
.tag--onDark {
  border-color: rgba(255, 255, 255, .16);
  color: var(--muted-lighter);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
  border-radius: 11px;
  padding: 0 20px;
  height: 48px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .15s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
  background: var(--navy);
  color: var(--white);
}
.btn--primary:hover { box-shadow: 0 10px 24px rgba(45, 52, 89, .28); }
.btn--secondary {
  background: var(--white);
  color: var(--navy);
  border-color: rgba(45, 52, 89, .16);
}
.btn--secondary:hover { box-shadow: 0 8px 20px rgba(45, 52, 89, .12); }

/* =========================================================
   NAV
   ========================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid rgba(45, 52, 89, .06);
}
.nav__inner {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px; /* logo 32px from the left, CTA 32px from the right */
}
.wordmark {
  display: inline-flex;
  align-items: center;
  color: var(--navy); /* drives the logo via currentColor */
}
.wordmark .logo { display: block; height: 20px; width: auto; }
.wordmark--light { color: var(--white); }

.nav__links {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  gap: 32px;
}
.nav__links a {
  font-size: 16px;
  font-weight: 600;
  color: var(--navy);
  opacity: .8;
  transition: opacity .15s var(--ease);
}
.nav__links a:hover, .nav__links a.active { opacity: 1; }
.nav__cta { height: 48px; }

/* hamburger toggle (mobile only) */
.nav__toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
}
.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: var(--navy);
  transition: transform .25s var(--ease), opacity .2s var(--ease);
}
body.menu-open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.menu-open .nav__toggle span:nth-child(2) { opacity: 0; }
body.menu-open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* full-screen overlay menu */
.nav__overlay {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  bottom: 0;
  display: none; /* enabled on mobile */
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 36px;
  background: var(--white);
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s var(--ease), visibility .25s var(--ease);
  z-index: 90;
}
body.menu-open .nav__overlay { opacity: 1; visibility: visible; }
.nav__overlay-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}
.nav__overlay-links a {
  font-size: 28px;
  font-weight: 700;
  color: var(--navy);
  opacity: .9;
}
.nav__overlay-links a.active, .nav__overlay-links a:hover { opacity: 1; }
.nav__overlay-cta { height: 56px; font-size: 18px; padding: 0 32px; }

/* =========================================================
   HERO
   ========================================================= */
.hero { position: relative; background: var(--white); padding: 36px 0 0; overflow: hidden; }
/* gray panel: right half of the viewport, anchored to the bottom, half height */
.hero__panel {
  position: absolute;
  left: 50%;
  right: 0;
  bottom: 0;
  height: 50%;
  background: var(--panel);
  z-index: 0;
}
.hero__inner {
  /* full-width; text is placed within the left half below */
  max-width: none;
  margin: 0;
  padding: 0;
  min-height: 648px;
  position: relative;
  z-index: 1;
}
/* copy lives in the left half with ~17% gutters on each side */
.hero__copy {
  padding-top: 48px;
  margin-left: var(--gutter);
}
/* body/margins stay proportional; the display title may extend wider (see below) */
.hero__title {
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--navy);
  max-width: min(620px, calc(50vw - 2 * var(--gutter)));
}
/* at larger sizes let the headline break to two lines ("The Decision Engine" / "for Collectors") */
@media (min-width: 1200px) {
  .hero__title { max-width: 600px; }
}
.tm { font-size: .32em; font-weight: 700; vertical-align: super; }
.hero__lede {
  font-size: clamp(22px, 2.5vw, 32px);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--navy);
  max-width: min(560px, calc(50vw - 2 * var(--gutter)));
  margin: 24px 0 0;
}
.hero__body {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--navy);
  max-width: min(480px, calc(50vw - 2 * var(--gutter)));
  margin: 34px 0 0;
}
.hero__actions { display: flex; gap: 14px; margin-top: 40px; }

/* hero image: two-layer parallax (slide1_phone + slide1_prompt).
   The phone fills 51.2% of the canvas and sits right-of-centre (57.9%), so scale up
   1.952x and offset to match the other screenshots: body 120px from top, centred in the right half */
.hero__figure {
  --pb: min(400px, 34vw); /* phone body width, matches the scrolly screenshots */
  position: absolute;
  width: calc(var(--pb) * 1.952);
  top: calc(50px - var(--pb) * 0.0617); /* body top → 120px from viewport */
  left: 75%;
  transform: translateX(-57.89%);        /* body centre → 75% of viewport */
  z-index: 2;
  pointer-events: none;
}
.hero-back { display: block; width: 100%; height: auto; }
.hero-front { position: absolute; top: 0; left: 0; width: 100%; height: auto; }
.hero-back, .hero-front { will-change: transform; }

/* -------- initial-load entrance --------
   staggered fade-up for the nav + hero; the figure keeps its own translateX so it
   only fades (animating transform would fight the centring) */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.nav { animation: fadeIn .6s var(--ease) both; }
.hero__panel { animation: fadeIn 1s var(--ease) .05s both; }
.hero__title  { animation: fadeUp .7s var(--ease) .12s both; }
.hero__lede   { animation: fadeUp .7s var(--ease) .2s both; }
.hero__body   { animation: fadeUp .7s var(--ease) .28s both; }
.hero__actions{ animation: fadeUp .7s var(--ease) .4s both; }
.hero__figure { animation: fadeIn .9s var(--ease) .3s both; }

/* =========================================================
   FEATURES (dark)
   ========================================================= */
.features {
  background: var(--dark);
  color: var(--white);
  padding: 96px 0;
}
.features__head { text-align: center; display: flex; flex-direction: column; align-items: center; }
.features__head .tag { margin-bottom: 24px; }
.features__head .section-sub { text-align: center; }
/* staggered reveal on scroll-in: tag → title → subtitle */
.features__head .tag,
.features__head .section-title,
.features__head .section-sub {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .4s var(--ease), transform .4s var(--ease);
}
.features__head.is-in .tag           { opacity: 1; transform: none; transition-delay: 0s; }
.features__head.is-in .section-title { opacity: 1; transform: none; transition-delay: .05s; }
.features__head.is-in .section-sub   { opacity: 1; transform: none; transition-delay: .1s; }

.feature-cards {
  list-style: none;
  margin: 56px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.fcard {
  position: relative;
  background: var(--dark-card);
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: var(--radius);
  padding: 22px 20px;
  min-height: 208px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
  /* revealed on scroll: cascade in left→right (see JS) */
  opacity: 0;
  transform: translateX(-22px);
  transition: opacity .42s var(--ease), transform .42s var(--ease);
}
.fcard.is-in { opacity: 1; transform: none; }
.feature-cards .fcard:nth-child(2) { transition-delay: .06s; }
.feature-cards .fcard:nth-child(3) { transition-delay: .12s; }
.feature-cards .fcard:nth-child(4) { transition-delay: .18s; }
.feature-cards .fcard:nth-child(5) { transition-delay: .24s; }
.fcard__icon { display: flex; align-items: center; }
.fcard__icon svg { height: 22.5px; width: auto; color: #4F7BC4; }
.fcard__text { display: flex; flex-direction: column; gap: 10px; }
.fcard__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  margin: 0;
  letter-spacing: -0.01em;
}
.fcard__label {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--muted-2);
  margin: 0;
}

/* =========================================================
   SCROLLYTELLING
   ========================================================= */
.scrolly { position: relative; background: var(--white); }

/* -------- pinned viewport-wide layer -------- */
.scrolly__pin {
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  overflow: hidden; /* crop the screenshots to the pinned background area */
}

/* locked background: left edge at middle of viewport, extends to the right edge */
.scrolly__bg {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  right: 0;
  background: var(--panel);
}

/* vertical progress slider: left edge of viewport, nav bottom → viewport bottom */
.scrolly__rail {
  position: absolute;
  left: 0;
  top: var(--nav-h);
  bottom: 0;
  width: 5px;
  background: transparent; /* white page shows behind the unfilled portion */
  opacity: 0; /* hidden until the first slide is fully pinned (set by JS) */
  transition: opacity .25s ease;
}
.scrolly__rail-fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0;
  border-radius: 0; /* square ends */
  background: var(--navy);
  transition: height .15s linear;
}

/* screenshots: 120px from top of viewport, centred in the right half */
.phone-stack {
  --pw: min(400px, 34vw); /* rendered phone width, shared by the parallax slide */
  position: absolute;
  top: 120px;
  left: 75%;
  transform: translateX(-50%);
  width: var(--pw);
}
.phone {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: auto;
  opacity: 0;
  transition: opacity .55s var(--ease);
  filter: drop-shadow(0 24px 48px rgba(45, 52, 89, .16));
  will-change: opacity;
}
.phone.is-active { opacity: 1; }

/* two-layer parallax screenshot (Connect the whole hobby) */
/* the connect layers have a wider canvas (menu overflows left) with the phone at
   60.8% width; scale up 1.642x and offset so the phone matches the other screenshots */
.phone--parallax {
  width: calc(var(--pw) * 1.642);
  top: calc(var(--pw) * -0.2054);
  left: 50%;
  transform: translateX(-50%);
}
.phone--parallax .parallax-back { display: block; width: 100%; height: auto; }
.phone--parallax .parallax-front {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: auto;
}

/* ============ LIVE CONVERSATIONAL-AI PHONE (scrolly slide 0) ============
   A real device built from DOM instead of a screenshot. The fixed 393×852
   "device" is scaled by JS (sizeChatPhone) to match --pw, so it renders
   exactly like the sibling screenshots (width:100%, height auto). */
.phone--chat { overflow: visible; }
.chatphone {
  --ink: #232B36; --muted: #5D646D; --line: #E7ECF3;
  --chip-border: #EAEEF4; --blue: #2F6BF7;
  --smooth: cubic-bezier(.22, 1, .36, 1);
  position: relative;
  width: 393px; height: 852px;
  background: var(--white);
  border-radius: 44px;
  overflow: hidden;
  display: flex; flex-direction: column;
  transform-origin: top left; /* JS sets transform: scale() */
  color: var(--navy);
  -webkit-font-smoothing: antialiased;
}
.chatphone * { box-sizing: border-box; }

.cp-statusbar { height: 52px; flex: 0 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 14px 34px 0; font-size: 16px; font-weight: 600; }
.cp-icons { display: flex; align-items: center; gap: 7px; }
.cp-statusbar svg { display: block; }
.cp-appbar { flex: 0 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 8px 20px 14px; }
.cp-round { width: 44px; height: 44px; border-radius: 50%; background: var(--panel); display: flex; align-items: center; justify-content: center; }
.cp-mark { display: flex; align-items: center; justify-content: center; }
.cp-mark svg { width: 118px; height: auto; }
.cp-chat { flex: 1 1 auto; overflow: hidden; position: relative; padding: 8px 16px 0; }
.cp-scroll { display: flex; flex-direction: column; gap: 16px; transition: transform .65s var(--smooth); will-change: transform; }
.cp-composer { flex: 0 0 auto; padding: 12px 16px 26px; background: linear-gradient(to top, var(--white) 70%, rgba(255,255,255,0)); }
.cp-bar { display: flex; align-items: center; gap: 12px; background: var(--panel); border-radius: 22px; padding: 14px 18px; color: var(--muted); font-size: 16px; }
.cp-plus { font-size: 22px; font-weight: 400; color: var(--navy); line-height: 1; }

/* user prompt bubble — fades + rises in like an outgoing text message */
.chatphone .msg-user { align-self: flex-end; max-width: 88%; background: var(--navy); color: var(--white); font-size: 16px; font-weight: 500; line-height: 24px; padding: 16px 20px; border-radius: 24px; border-bottom-right-radius: 8px; transform-origin: 100% 100%; opacity: 0; transform: translateY(20px) scale(.94); transition: opacity .5s var(--smooth), transform .5s var(--smooth); }
.chatphone .msg-user.in { opacity: 1; transform: none; }

/* typing indicator */
.chatphone .typing { align-self: flex-start; display: flex; gap: 6px; padding: 14px 18px; background: var(--panel); border-radius: 20px; transform-origin: 0 100%; }
.chatphone .typing span { width: 8px; height: 8px; border-radius: 50%; background: #AAB1BD; animation: cp-blink 1.3s infinite ease-in-out; }
.chatphone .typing span:nth-child(2) { animation-delay: .18s; }
.chatphone .typing span:nth-child(3) { animation-delay: .36s; }
@keyframes cp-blink { 0%,80%,100% { opacity: .3; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-3px); } }

/* AI response text (streamed word by word) */
.chatphone .resp-text { align-self: flex-start; font-size: 16px; font-weight: 600; line-height: 24px; color: var(--ink); }
.chatphone .resp-text .w { display: inline-block; opacity: 0; transform: translateY(5px); transition: opacity .32s var(--smooth), transform .32s var(--smooth); }
.chatphone .resp-text .w.in { opacity: 1; transform: none; }

/* AI section heading ("Card Details") */
.chatphone .section-head { align-self: stretch; display: flex; align-items: center; gap: 10px; margin-top: 2px; }
.chatphone .section-head h3 { margin: 0; font-size: 24px; font-weight: 700; line-height: 32px; color: var(--navy); flex: 1; }
.chatphone .section-head .chev { width: 40px; height: 40px; border-radius: 12px; background: var(--panel); display: flex; align-items: center; justify-content: center; color: var(--navy); flex: 0 0 auto; }

/* data card (2 columns) */
.chatphone .datacard { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.chatphone .cell { display: flex; flex-direction: column; gap: 6px; padding: 0 4px; }
.chatphone .cell .label { font-size: 14px; font-weight: 700; line-height: 20px; color: var(--muted); }
.chatphone .cell .big { font-size: 18px; font-weight: 700; line-height: 24px; color: var(--navy); }
.chatphone .cell .sub { font-size: 14px; font-weight: 700; line-height: 20px; color: var(--muted); }
.chatphone .chip { align-self: flex-start; display: flex; align-items: center; gap: 8px; margin-top: 2px; padding: 6px 12px 6px 6px; background: var(--white); border: 1px solid var(--chip-border); border-radius: 12px; box-shadow: 0 2px 6px -2px rgba(29,37,71,.12); }
.chatphone .chip .av { width: 18px; height: 18px; border-radius: 50%; flex: 0 0 auto; object-fit: cover; display: block; background: #fff; box-shadow: inset 0 0 0 1px rgba(29,37,71,.08); }
.chatphone .chip .nm { font-size: 14px; font-weight: 700; line-height: 20px; color: var(--navy); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 96px; }
.chatphone .chip .nm .time { font-size: 12px; font-weight: 500; color: var(--muted); margin-left: 6px; }

/* base card (graded card image + T-Score + value) */
.chatphone .basecard { align-self: stretch; display: flex; flex-direction: column; gap: 12px; margin-bottom: 14px; }
.chatphone .basecard .tscore { align-self: flex-start; display: flex; align-items: center; gap: 4px; background: #BFEAD4; color: #027C41; border-radius: 6px; padding: 3px 10px; font-size: 16px; font-weight: 900; line-height: 24px; }
.chatphone .basecard .tscore svg { width: 16px; height: 16px; }
.chatphone .card-img { width: 329px; max-width: 100%; height: auto; aspect-ratio: 987/1659; border-radius: 10px; display: block; align-self: center; box-shadow: 0 10px 30px -12px rgba(29,37,71,.3); }
.chatphone .card-info { display: flex; flex-direction: column; align-items: flex-start; margin-top: 10px; }
.chatphone .ci-name { font-size: 18px; font-weight: 900; line-height: 1.15; letter-spacing: -.01em; color: var(--navy); text-transform: uppercase; }
.chatphone .ci-sub { font-size: 15px; font-weight: 700; line-height: 1.3; color: var(--muted); margin-top: 3px; }
.chatphone .ci-price { font-size: 18px; font-weight: 900; line-height: 1.2; color: var(--navy); margin-top: 13px; }
.chatphone .ci-price .e { font-size: 12px; font-weight: 600; font-style: italic; color: var(--muted); margin-left: 2px; }
.chatphone .ci-change { display: flex; align-items: center; gap: 7px; margin-top: 6px; }
.chatphone .ci-arrow { width: 22px; height: 22px; flex: 0 0 auto; border-radius: 50%; background: #BFEAD4; color: #027C41; display: flex; align-items: center; justify-content: center; }
.chatphone .ci-arrow svg { width: 12px; height: 12px; }
.chatphone .ci-delta { font-size: 15px; font-weight: 900; color: #027C41; }
.chatphone .ci-time { font-size: 15px; font-weight: 700; color: var(--muted); }
.chatphone .ci-grade { margin-top: 14px; display: inline-flex; align-items: center; gap: 9px; background: #fff; border: 1px solid #C3181B; border-radius: 6px; padding: 4px 12px; font-size: 13px; font-weight: 500; line-height: 1; color: var(--navy); }
.chatphone .ci-grade b { font-weight: 800; }

/* reveal animation for response blocks */
.chatphone .reveal { opacity: 0; transform: translateY(16px) scale(.98); transition: opacity .55s var(--smooth), transform .55s var(--smooth); }
.chatphone .reveal.in { opacity: 1; transform: none; }
.parallax-back, .parallax-front { will-change: transform; }

/* -------- scrolling text (overlaps the pinned layer) -------- */
.scrolly__steps {
  position: relative;
  z-index: 1;
  max-width: none;
  margin: -100vh 0 0;   /* pull text up over the pinned layer */
  padding: 0;
}
.step {
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 20px;
  margin-left: var(--gutter);
  max-width: min(500px, calc(50vw - 2 * var(--gutter)));
}
/* staggered "wave" reveal: tag → title → copy rise and fade in when the step centres */
.step .tag,
.step__title,
.step__copy {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .4s var(--ease), transform .4s var(--ease);
}
.step.is-active .tag        { opacity: 1; transform: none; transition-delay: 0s; }
.step.is-active .step__title { opacity: 1; transform: none; transition-delay: .05s; }
.step.is-active .step__copy  { opacity: 1; transform: none; transition-delay: .1s; }
.step .tag { align-self: flex-start; }
.step__title {
  font-size: clamp(34px, 4vw, 53px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--navy);
}
.step__copy {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--navy);
  margin: 0;
  max-width: 460px;
}

/* =========================================================
   JOIN THE BETA (dark)
   ========================================================= */
.beta { background: var(--dark); color: var(--white); padding: 72px 0; }
.beta__inner { display: flex; flex-direction: column; align-items: center; gap: 28px; text-align: center; }
/* staggered reveal on scroll-in: heading then form */
.beta__inner .section-title,
.beta__inner .beta__form {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .4s var(--ease), transform .4s var(--ease);
}
.beta__inner.is-in .section-title { opacity: 1; transform: none; transition-delay: 0s; }
.beta__inner.is-in .beta__form   { opacity: 1; transform: none; transition-delay: .08s; }
.beta__form {
  display: flex;
  gap: 10px;
  width: 100%;
  max-width: 460px;
  background: var(--dark-input);
  border-radius: 32px;
  padding: 6px 6px 6px 22px;
}
.beta__input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--white);
  font: 500 16px "DM Sans", sans-serif;
  outline: none;
}
.beta__input::placeholder { color: var(--muted-2); }
.beta__submit {
  flex: none;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: transform .15s var(--ease), background .2s var(--ease);
}
.beta__submit:hover { transform: translateY(-1px); background: #3a4275; }
.beta__submit:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.beta__arrow { width: 14px; height: 13px; display: block; }
/* signup outcome messages — tuned for the dark section, not the light-page defaults */
.beta__success {
  color: var(--white);
  font: 600 17px "DM Sans", sans-serif;
  text-align: center;
  padding: 18px 0;
  max-width: 460px;
}
.beta__error {
  color: #FF9A9A;
  font: 500 15px "DM Sans", sans-serif;
  text-align: center;
  padding: 10px 0 0;
  max-width: 460px;
}

/* =========================================================
   MISSION
   ========================================================= */
/* mirrors one scrolly slide, flipped: light panel + phone on the LEFT, text on the RIGHT */
.mission {
  position: relative;
  overflow: hidden;
  background: var(--white);
  min-height: 104vh;
  display: flex;
  align-items: center;
}
/* locked background: left edge → middle of viewport */
.mission__panel {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 50%;
  background: var(--panel);
  z-index: 0;
}
/* phone: centred in the left half; drifts on scroll (JS sets translate) */
.mission__phone {
  position: absolute;
  top: 72px;
  left: 25%;
  transform: translateX(-50%);
  width: min(400px, 34vw);
  height: auto;
  z-index: 1;
  filter: drop-shadow(0 24px 48px rgba(45, 52, 89, .16));
  will-change: translate;
}
.mission__inner { position: relative; z-index: 2; width: 100%; max-width: none; margin: 0; padding: 0; }
/* text sits in the right half with matching ~17% gutters */
.mission__copy {
  margin-left: auto;
  margin-right: var(--gutter);
  max-width: min(440px, calc(50vw - 2 * var(--gutter)));
}
.mission__copy .tag { margin-bottom: 20px; }
.mission__copy .section-title { margin-bottom: 22px; }
.mission__body p {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--navy);
  margin: 0 0 18px;
}
.mission__body p:last-child { margin-bottom: 0; }

/* =========================================================
   FOOTER
   ========================================================= */
.footer { background: var(--dark); color: var(--white); padding: 40px 0; }
.footer__inner {
  padding: 0 32px; /* match the nav's edge margins */
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer__left { display: flex; align-items: center; gap: 20px; }
.footer__copy { font-size: 12px; font-weight: 600; color: var(--muted-2); }
.footer__right { display: flex; align-items: center; gap: 20px; }
.footer__right { gap: 14px; }
.footer__social { color: var(--muted-light); opacity: .85; transition: opacity .15s var(--ease); }
.footer__social:hover { opacity: 1; }
.footer__social svg { display: block; width: 22px; height: 22px; }
.footer__mail { font-size: 16px; font-weight: 600; color: var(--white); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1100px) {
  .feature-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 1024px) {
  :root { --pad: 48px; }

  /* Hero stacks: text first, image below */
  .hero { overflow: visible; padding: 32px 0 0; display: flex; flex-direction: column; }
  .hero__panel { display: none; }
  .hero__inner { order: 1; padding: 0 var(--pad); min-height: 0; }
  .hero__copy { padding-top: 0; margin-left: 0; max-width: none; }
  .hero__title { max-width: none; }
  .hero__body { max-width: 480px; }
  .hero__figure {
    order: 2;
    position: relative; /* keep the absolute foreground layer contained */
    left: auto;
    top: auto;
    transform: none;
    width: min(460px, 92%);
    margin: 24px auto 0;
  }
  .hero-back, .hero-front { transform: none !important; }

  /* Scrollytelling → simple stacked flow (no pinning) */
  .scrolly__pin { display: none; }
  .scrolly__steps { margin-top: 0; padding: 0 var(--pad); }
  .step {
    min-height: 0;
    opacity: 1;
    transform: none;
    margin-left: 0;
    max-width: none;
    padding: 48px 0 24px;
  }
  /* text stays visible on mobile (no per-step wave) */
  .step .tag, .step__title, .step__copy { opacity: 1; transform: none; transition: none; }
  /* inline phone rendered per-step on mobile */
  .step::after {
    content: "";
    display: block;
    width: min(300px, 78%);
    aspect-ratio: 393 / 852;
    margin: 28px auto 0;
    background: var(--panel);
    border-radius: 28px;
    background-image: var(--phone-src);
    background-size: 84% auto;
    background-position: center 8%;
    background-repeat: no-repeat;
  }
  /* Connect step uses the two parallax layers (stacked, no parallax on mobile) */
  .step[data-index="4"]::after {
    aspect-ratio: 960 / 1512;
    background-image: var(--phone-front-src), var(--phone-src);
    background-size: 100% auto, 100% auto;
    background-position: center, center;
  }

  /* Mission stacks: phone (on a light panel) above the text */
  .mission { display: block; min-height: 0; overflow: visible; padding: 40px var(--pad); }
  .mission__panel { display: none; }
  .mission__phone {
    position: static;
    transform: none;
    width: min(300px, 74%);
    margin: 0 auto 28px;
  }
  .mission__copy { margin-left: 0; margin-right: 0; max-width: none; }

  .footer__inner { flex-direction: column; align-items: flex-start; }
}

/* nav collapses to the hamburger menu before the centred links can overlap the logo/CTA */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .nav__overlay { display: flex; }
}

@media (max-width: 620px) {
  :root { --pad: 20px; }
  .feature-cards { grid-template-columns: 1fr; }
  /* cards simply fade up as each scrolls into view (no left→right stagger) */
  .fcard { transform: translateY(24px); }
  .feature-cards .fcard { transition-delay: 0s; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { justify-content: center; }
  .beta__form { padding: 6px 6px 6px 18px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto; }
  .phone, .step, .scrolly__rail-fill { transition: none; }
  .nav, .hero__panel, .hero__title, .hero__lede, .hero__body, .hero__actions, .hero__figure { animation: none; }
  .fcard { opacity: 1 !important; transform: none !important; transition: none; }
  .step .tag, .step__title, .step__copy { opacity: 1 !important; transform: none !important; transition: none; }
  .beta__inner .section-title, .beta__inner .beta__form { opacity: 1 !important; transform: none !important; transition: none; }
  .features__head .tag, .features__head .section-title, .features__head .section-sub { opacity: 1 !important; transform: none !important; transition: none; }
  .chatphone .reveal, .chatphone .msg-user, .chatphone .resp-text .w, .chatphone .cp-scroll { transition: none; }
  .chatphone .typing span { animation: none; }
}