/* ── Fonts (self-hosted, no third-party requests) ───────────── */
@font-face { font-family: 'Bricolage Grotesque'; src: url(../fonts/bricolage.woff2) format('woff2'); font-weight: 400 800; font-display: swap; }
@font-face { font-family: 'Instrument Sans'; src: url(../fonts/instrument.woff2) format('woff2'); font-weight: 300 700; font-display: swap; }
@font-face { font-family: 'Martian Mono'; src: url(../fonts/martian.woff2) format('woff2'); font-weight: 300 700; font-display: swap; }

/* ── Tokens ──────────────────────────────────────────────────── */
:root {
  --paper: #f3f6f6;
  --paper-2: #e7eef0;
  --card: #fbfcfc;
  --ink: #0b1a20;
  --ink-2: #3c5561;
  --ink-3: #7b939d;
  --line: rgba(11, 26, 32, .11);
  --line-2: rgba(11, 26, 32, .2);
  --blue: #1a9cbd;
  --blue-deep: #0d5f75;
  --blue-ink: #083f4f;
  --blue-pale: #dcf0f5;
  --ice: #7fe0f2;
  --night: #061821;
  --neg: #e0604b;
  --pos: #3aa56b;
  --ease: cubic-bezier(.2, .75, .1, 1);
  --gutter: clamp(16px, 5vw, 72px);
  --f-display: 'Bricolage Grotesque', 'Segoe UI', sans-serif;
  --f-body: 'Instrument Sans', 'Segoe UI', sans-serif;
  --f-mono: 'Martian Mono', ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; overflow-x: clip; }
body { background: var(--paper); color: var(--ink); font-family: var(--f-body); font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased; overflow-x: clip; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
svg { width: 1em; height: 1em; flex-shrink: 0; }
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
[hidden] { display: none !important; }

/* ── Ambient ─────────────────────────────────────────────────── */
#bg { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -2; pointer-events: none; }
.light { position: fixed; inset: 0; z-index: -1; pointer-events: none; background: radial-gradient(640px circle at var(--mx, 70%) var(--my, 20%), rgba(26, 156, 189, .09), transparent 60%); }
.progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 60; }
.progress i { display: block; height: 100%; width: 100%; background: linear-gradient(90deg, var(--blue), var(--ice)); transform-origin: left; transform: scaleX(var(--p, 0)); }

/* ── Wordmark: the o is a moon in phase ─────────────────────── */
.wordmark {
  display: inline-flex; align-items: baseline; font-family: var(--f-display); font-weight: 800; font-size: 1.6rem;
  letter-spacing: -.05em; line-height: 1; color: var(--ink); --moon-shade: var(--blue-ink);
}
.wordmark svg { width: .6em; height: .6em; margin: 0 .015em 0 .03em; color: var(--blue); transition: transform .8s var(--ease); }
.wordmark:hover svg { transform: rotate(-180deg); }
.wordmark-xl { font-size: clamp(3.2rem, 10vw, 5.4rem); }

/* ── Top bar ─────────────────────────────────────────────────── */
.top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50; height: 68px;
  display: flex; align-items: center; gap: 28px; padding: 0 var(--gutter);
  transition: background .3s, box-shadow .3s, height .3s;
}
.top.scrolled { background: rgba(243, 246, 246, .8); backdrop-filter: blur(14px) saturate(1.3); -webkit-backdrop-filter: blur(14px) saturate(1.3); box-shadow: 0 1px 0 var(--line); height: 60px; }
.top.on-night:not(.scrolled-past) { color: #fff; }
.top-links { display: flex; gap: 22px; margin-left: 12px; }
.top-links a { font-size: .92rem; color: var(--ink-2); position: relative; }
.top-links a::after { content: ''; position: absolute; left: 0; right: 0; bottom: -4px; height: 1.5px; background: var(--blue); transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease); }
.top-links a:hover { color: var(--ink); }
.top-links a:hover::after { transform: scaleX(1); }
.top-r { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.lang { position: relative; }
.lang-btn { font-family: var(--f-mono); font-size: .72rem; letter-spacing: .1em; padding: 8px 12px 8px 30px; border: 1px solid var(--line-2); border-radius: 99px; position: relative; transition: background .2s, border-color .2s; }
.lang-btn::before {
  content: ''; position: absolute; left: 11px; top: 50%; width: 11px; height: 11px; margin-top: -5.5px; border: 1.4px solid currentColor; border-radius: 50%;
  background: linear-gradient(currentColor, currentColor) center / 1.4px 100% no-repeat, linear-gradient(currentColor, currentColor) center / 100% 1.4px no-repeat; opacity: .7;
}
.lang-btn:hover { background: var(--card); border-color: var(--blue); }
.lang-menu { position: absolute; right: 0; top: calc(100% + 8px); min-width: 170px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 6px; box-shadow: 0 18px 40px -18px rgba(8, 63, 79, .35); }
.lang-menu button { display: flex; justify-content: space-between; width: 100%; padding: 9px 12px; border-radius: 9px; text-align: left; font-size: .92rem; }
.lang-menu button b { font-family: var(--f-mono); font-weight: 400; font-size: .7rem; color: var(--ink-3); }
.lang-menu button:hover, .lang-menu button.on { background: var(--blue-pale); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; white-space: nowrap;
  background: var(--ink); color: #fff; font-weight: 600; font-size: .95rem; padding: 13px 22px; border-radius: 99px;
  transition: background .25s, transform .25s var(--ease), box-shadow .25s;
  box-shadow: 0 10px 22px -12px rgba(8, 40, 52, .6);
}
.btn:hover { background: var(--blue-deep); transform: translateY(-2px); }
.btn-sm { padding: 9px 16px; font-size: .86rem; }
.btn-ice { background: var(--ice); color: var(--blue-ink); }
.btn-ice:hover { background: #fff; }
.btn-ghost { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: .95rem; padding: 13px 6px; color: var(--ink-2); }
.btn-ghost svg { width: 18px; height: 18px; transition: transform .3s var(--ease); }
.btn-ghost:hover { color: var(--ink); }
.btn-ghost:hover svg { transform: translateY(3px); }

/* ── Type ────────────────────────────────────────────────────── */
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-family: var(--f-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-deep); margin-bottom: 20px; }
.eyebrow::before { content: ''; width: 20px; height: 1.5px; background: currentColor; }
h1, h2, h3 { font-family: var(--f-display); letter-spacing: -.035em; line-height: 1.03; text-wrap: balance; }
h1 { font-size: clamp(2.1rem, 3.5vw, 3.5rem); font-weight: 730; margin-bottom: 22px; }
h1 em { font-style: normal; color: var(--blue-deep); background: linear-gradient(var(--ice), var(--ice)) 0 92% / 0 .14em no-repeat; -webkit-box-decoration-break: clone; box-decoration-break: clone; transition: background-size 1.2s var(--ease) .6s; }
h1.in em { background-size: 100% .14em; }
h2 { font-size: clamp(1.8rem, 3vw, 2.7rem); font-weight: 720; margin-bottom: 18px; }
.lede { font-size: clamp(.98rem, 1.1vw, 1.08rem); color: var(--ink-2); max-width: 540px; }

/* scroll reveal */
.rv { opacity: 0; transform: translateY(22px); transition: opacity .9s var(--ease), transform 1s var(--ease); transition-delay: var(--d, 0ms); }
.rv.in { opacity: 1; transform: none; }

section { position: relative; }

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
  min-height: 100svh; display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); align-items: center; gap: 24px;
  padding: 110px var(--gutter) 60px; max-width: 1480px; margin: 0 auto;
}
.hero-cta { display: flex; gap: 10px; align-items: center; margin-top: 30px; flex-wrap: wrap; }
.hero-note { margin-top: 18px; font-size: .84rem; color: var(--ink-3); }

.trio { position: relative; height: calc(720px * var(--hero-scale, .85)); perspective: 1800px; }
.trio-inner { position: absolute; inset: 0; transform: scale(var(--hero-scale, .85)); transform-style: preserve-3d; }
.trio-slot { position: absolute; left: 50%; top: 50%; transform-style: preserve-3d; transition: transform 1.2s var(--ease); }
.trio-c { transform: translate(-50%, -50%) translateZ(60px) rotateY(var(--ry, 0deg)) rotateX(var(--rx, 0deg)); z-index: 3; }
.trio-l { transform: translate(-50%, -50%) translateX(calc(-62% - var(--spread, 0px))) translateZ(-120px) rotateY(24deg) scale(.86); z-index: 1; filter: saturate(.9); }
.trio-r { transform: translate(-50%, -50%) translateX(calc(62% + var(--spread, 0px))) translateZ(-120px) rotateY(-24deg) scale(.86); z-index: 1; filter: saturate(.9); }
.trio.pre .trio-l, .trio.pre .trio-r { transform: translate(-50%, -50%) translateZ(-200px) scale(.8); opacity: 0; }
.trio.pre .trio-c { transform: translate(-50%, -44%) translateZ(0) scale(.96); opacity: 0; }
.trio-slot { transition: transform 1.3s var(--ease), opacity 1s var(--ease); }
.trio-c .phone { animation: float 7s ease-in-out infinite; }
@keyframes float { 50% { translate: 0 -10px; } }
.dot-live { width: 7px; height: 7px; border-radius: 50%; background: var(--pos); animation: live 2s infinite; }
@keyframes live { 0% { box-shadow: 0 0 0 0 rgba(58, 165, 107, .5); } 70%, 100% { box-shadow: 0 0 0 8px rgba(58, 165, 107, 0); } }

/* ── Questions ───────────────────────────────────────────────── */
.questions { padding: 18vh var(--gutter) 16vh; max-width: 1100px; margin: 0 auto; }
.quiz { list-style: none; }
.quiz li { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 26px 0; border-top: 1px solid var(--line); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.quiz li:last-child { border-bottom: 1px solid var(--line); }
.quiz li.later { opacity: .18; pointer-events: none; transform: translateX(-8px); }
.q-text { font-family: var(--f-display); font-size: clamp(1.2rem, 2.1vw, 1.8rem); font-weight: 600; letter-spacing: -.03em; line-height: 1.12; }
.q-a { display: flex; gap: 8px; flex-shrink: 0; }
.q-a button { font-weight: 600; font-size: .95rem; padding: 10px 20px; border-radius: 99px; border: 1.5px solid var(--line-2); transition: background .2s, color .2s, border-color .2s, transform .2s var(--ease); }
.q-a button:hover { border-color: var(--ink); transform: translateY(-2px); }
.q-a button.picked { background: var(--ink); color: #fff; border-color: var(--ink); }
.quiz li.done .q-a button:not(.picked) { opacity: .3; }
.quiz-out { font-family: var(--f-display); font-size: clamp(1.15rem, 1.8vw, 1.6rem); font-weight: 560; letter-spacing: -.025em; line-height: 1.2; color: var(--blue-deep); max-width: 820px; margin-top: 40px; min-height: 2.5em; }
.quiz-out span { display: inline-block; opacity: 0; transform: translateY(8px); animation: word .5s var(--ease) forwards; animation-delay: calc(var(--w) * 45ms); }
@keyframes word { to { opacity: 1; transform: none; } }

/* ── Walkthrough ─────────────────────────────────────────────── */
.walk { padding: 6vh var(--gutter) 10vh; max-width: 1280px; margin: 0 auto; }
.walk-head { max-width: 680px; margin-bottom: 4vh; }
.walk-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 6vw, 96px); }
.walk-phone { order: 2; }
.walk-stage { position: sticky; top: calc(50vh - 340px * var(--walk-scale, .85)); height: calc(680px * var(--walk-scale, .85)); display: grid; place-items: center; perspective: 1600px; }
.walk-stage .phone { transform: scale(var(--walk-scale, .85)) rotateY(var(--wry, -8deg)) rotateX(3deg); transition: transform 1s var(--ease); }
.edge-ring {
  position: absolute; width: 380px; height: 700px; border: 1.5px dashed var(--blue-deep); border-radius: 70px;
  opacity: 0; transform: scale(calc(.92 * var(--walk-scale, .85))); transition: opacity .6s var(--ease), transform .8s var(--ease); pointer-events: none;
}
.edge-ring > span { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); display: inline-flex; align-items: center; gap: 7px; background: var(--paper); padding: 2px 12px; white-space: nowrap; font-family: var(--f-mono); font-size: .66rem; letter-spacing: .1em; text-transform: uppercase; color: var(--blue-deep); }
.edge-ring svg { width: 13px; height: 13px; }
.walk-stage.guard .edge-ring { opacity: 1; transform: scale(var(--walk-scale, .85)); }
.steps { list-style: none; }
.step { min-height: 78vh; display: flex; flex-direction: column; justify-content: center; max-width: 470px; opacity: .25; transition: opacity .6s var(--ease); }
.step.on { opacity: 1; }
.step-n { font-family: var(--f-mono); font-size: .8rem; color: var(--blue); margin-bottom: 14px; }
.step h3 { font-size: clamp(1.5rem, 2.3vw, 2.1rem); font-weight: 700; margin-bottom: 14px; }
.step p { font-size: 1.06rem; color: var(--ink-2); }
.step-hint { display: flex; align-items: center; gap: 8px; margin-top: 18px; font-size: .9rem !important; font-weight: 600; color: var(--blue-deep) !important; }
.step-hint svg { width: 16px; height: 16px; animation: nudge 1.6s ease-in-out infinite; }
@keyframes nudge { 50% { transform: translateX(5px); } }
.badge { display: inline-flex; align-items: center; gap: 6px; width: fit-content; margin-bottom: 12px; font-size: .74rem; font-weight: 700; padding: 5px 11px; border-radius: 99px; background: var(--blue-ink); color: var(--ice); }
.badge svg { width: 13px; height: 13px; }

/* ── Night: the science ─────────────────────────────────────── */
/* the night rises like a horizon and sets again */
.night {
  background: radial-gradient(120% 60% at 50% 0%, #0b2b38 0%, var(--night) 60%); color: #e6f2f5;
  padding: 16vh var(--gutter) 14vh; overflow: hidden; margin: 6vh 0;
  border-radius: 50% 50% 50% 50% / clamp(40px, 7vw, 110px) clamp(40px, 7vw, 110px) clamp(40px, 7vw, 110px) clamp(40px, 7vw, 110px);
  box-shadow: 0 -30px 80px -40px rgba(26, 156, 189, .45);
}
.night-sky { position: absolute; inset: 0; background-image: radial-gradient(1px 1px at 12% 22%, #fff8, transparent), radial-gradient(1px 1px at 72% 12%, #fff6, transparent), radial-gradient(1.5px 1.5px at 44% 68%, #fff5, transparent), radial-gradient(1px 1px at 88% 58%, #fff7, transparent), radial-gradient(1px 1px at 28% 82%, #fff5, transparent), radial-gradient(1.2px 1.2px at 60% 36%, #fff6, transparent); opacity: .7; }
.night-inner { position: relative; max-width: 1280px; margin: 0 auto; }
.night-head { max-width: 760px; }
.night .eyebrow { color: var(--ice); }
.night .lede { color: rgba(230, 242, 245, .7); }
.cloud-wrap { position: relative; height: min(70vh, 640px); margin: 10px 0 0; }
#cloud { width: 100%; height: 100%; display: block; cursor: grab; touch-action: pan-y; }
#cloud:active { cursor: grabbing; }
.drag-hint { position: absolute; left: 50%; bottom: 10px; transform: translateX(-50%); font-family: var(--f-mono); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; color: rgba(230, 242, 245, .4); }
.sig-controls { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: clamp(20px, 5vw, 64px); align-items: start; }
.pick-l { font-family: var(--f-mono); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; color: rgba(230, 242, 245, .5); margin: 0 0 10px; }
.pick-l + .chips { margin-bottom: 22px; }
.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chips button { font-size: .88rem; padding: 8px 15px; border-radius: 99px; border: 1px solid rgba(230, 242, 245, .22); color: rgba(230, 242, 245, .85); transition: background .2s, color .2s, border-color .2s; }
.chips button:hover { border-color: var(--ice); }
.chips button.on { background: var(--ice); color: var(--night); border-color: var(--ice); font-weight: 600; }
.sig-days { display: grid; grid-template-columns: 1fr auto; align-items: baseline; gap: 4px 10px; }
.sig-days label { font-size: .86rem; color: rgba(230, 242, 245, .7); }
.sig-days output { font-family: var(--f-mono); font-size: 1.05rem; font-weight: 600; }
.sig-days input { grid-column: 1 / -1; width: 100%; accent-color: var(--ice); margin: 8px 0 16px; }
.sig-r { display: grid; grid-template-columns: auto auto 1fr; align-items: center; gap: 12px; }
.sig-r-l { font-family: var(--f-mono); font-style: italic; color: rgba(230, 242, 245, .5); }
.sig-r output { font-family: var(--f-mono); font-size: 2.6rem; font-weight: 600; letter-spacing: -.04em; min-width: 4.2ch; }
.sig-meter { position: relative; height: 6px; background: rgba(230, 242, 245, .12); border-radius: 3px; }
.sig-meter::after { content: ''; position: absolute; left: 50%; top: -3px; bottom: -3px; width: 1px; background: rgba(230, 242, 245, .3); }
.sig-meter i { position: absolute; top: 0; bottom: 0; border-radius: 3px; transition: left .5s var(--ease), width .5s var(--ease), background .3s; }
.sig-sent { font-size: 1rem; font-weight: 500; margin-top: 14px; min-height: 3em; }
.sig-sent.locked { color: rgba(230, 242, 245, .5); }
.sig-note { font-size: .8rem; color: rgba(230, 242, 245, .45); margin-top: 12px; border-top: 1px solid rgba(230, 242, 245, .12); padding-top: 12px; }

/* ── Join ────────────────────────────────────────────────────── */
.join { padding: 14vh var(--gutter) 12vh; max-width: 1100px; margin: 0 auto; }
.tiers { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 14px; }
.tier { padding: 26px 28px; border-radius: 26px; background: var(--card); border: 1px solid var(--line); }
.tier-soon { background: linear-gradient(150deg, #e3f4f8, #f5fbfc); border-color: rgba(26, 156, 189, .25); }
.tier-t { display: flex; align-items: center; gap: 8px; font-family: var(--f-display); font-size: 1.35rem; font-weight: 680; letter-spacing: -.02em; margin-bottom: 16px; }
.tier-t svg { width: 18px; height: 18px; color: var(--blue); }
.tier ul { list-style: none; display: grid; gap: 11px; }
.tier li { display: flex; gap: 10px; align-items: flex-start; font-size: .98rem; color: var(--ink-2); }
.tier li svg { width: 17px; height: 17px; color: var(--pos); margin-top: 3px; }
.tier .dash { width: 12px; height: 1.5px; background: var(--blue); margin-top: 11px; flex-shrink: 0; }
.beta { margin-top: 16px; padding: 30px 30px 26px; border-radius: 30px; background: var(--blue-ink); color: #fff; position: relative; overflow: hidden; }
.beta::before { content: ''; position: absolute; right: -80px; top: -120px; width: 320px; height: 320px; border-radius: 50%; background: radial-gradient(circle at 35% 35%, var(--blue), transparent 65%); opacity: .5; }
.beta > * { position: relative; }
.beta-t { font-family: var(--f-display); font-size: 1.6rem; font-weight: 700; letter-spacing: -.02em; margin-bottom: 14px; }
.beta-row { display: flex; gap: 8px; max-width: 560px; }
.beta-row input { flex: 1; min-width: 0; background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .22); border-radius: 99px; padding: 13px 18px; color: #fff; outline: none; }
.beta-row input::placeholder { color: rgba(255, 255, 255, .45); }
.beta-row input:focus { border-color: var(--ice); }
.beta-note { font-size: .78rem; color: rgba(255, 255, 255, .55); margin-top: 12px; }
.beta-note a { text-decoration: underline; }
.beta-ok { font-size: 1rem; color: var(--ice); margin-top: 12px; }
.hp { position: absolute; left: -9999px; }

/* ── Footer ──────────────────────────────────────────────────── */
.foot { padding: 40px var(--gutter) 34px; border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr auto; gap: 18px 40px; max-width: 1480px; margin: 0 auto; }
.foot-brand p { font-size: .88rem; color: var(--ink-3); margin-top: 8px; }
.foot-links { display: flex; gap: 26px; align-items: flex-start; font-weight: 600; font-size: .95rem; }
.foot-links a:hover { color: var(--blue-deep); }
.foot-small { grid-column: 1 / -1; font-size: .76rem; color: var(--ink-3); }

/* ── Intro (language choice) ─────────────────────────────────── */
.intro { position: fixed; inset: 0; z-index: 90; background: var(--paper); display: grid; place-items: center; padding: 24px; transition: opacity .7s var(--ease), visibility .7s; }
.intro.out { opacity: 0; visibility: hidden; }
.intro-inner { text-align: center; }
.intro .wordmark svg { animation: moonIn 1.4s var(--ease) both; }
@keyframes moonIn { from { transform: rotate(-200deg) scale(.4); opacity: 0; } }
.intro-langs { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; max-width: 580px; margin: 34px auto 0; }
.intro-langs button { font-family: var(--f-display); font-size: 1.25rem; font-weight: 600; padding: 14px 24px; min-width: 150px; border-radius: 20px; border: 1px solid var(--line-2); background: var(--card); display: flex; flex-direction: column; align-items: flex-start; gap: 2px; transition: background .2s, color .2s, transform .3s var(--ease); }
.intro-langs button small { font-family: var(--f-mono); font-size: .64rem; font-weight: 400; color: var(--ink-3); }
.intro-langs button:hover, .intro-langs button.guess { background: var(--ink); color: #fff; }
.intro-langs button:hover small, .intro-langs button.guess small { color: var(--ice); }
.intro-langs button:hover { transform: translateY(-3px); }
.intro-hint { margin-top: 22px; font-size: .84rem; color: var(--ink-3); }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 1080px) {
  .top-links { display: none; }
  .sig-controls { grid-template-columns: 1fr; }
}
/* text and phones stay side by side down to 900px; the phones shrink with the column (fitPhones) */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 100px; min-height: 0; }
}
@media (max-width: 760px) {
  .top { gap: 10px; }
  .top .btn-sm { padding: 8px 13px; font-size: .8rem; }
  .trio { margin: 0 -16px; }
  .trio-l { transform: translate(-50%, -50%) translateX(-58%) translateZ(-160px) rotateY(26deg) scale(.8); }
  .trio-r { transform: translate(-50%, -50%) translateX(58%) translateZ(-160px) rotateY(-26deg) scale(.8); }
  .quiz li { flex-direction: column; align-items: flex-start; gap: 14px; }
  /* mobile: phone on top, steps as a swipeable row underneath */
  .walk-grid { display: block; }
  .walk-stage { position: relative; top: 0; height: 450px; display: block; padding-top: 14px; }
  .walk-stage .phone-host { height: 410px; align-items: start; }
  .walk-stage .phone { transform: scale(.66); transform-origin: 50% 0; }
  .edge-ring, .walk-stage.guard .edge-ring { width: 232px; height: 440px; border-radius: 46px; top: 0; left: 50%; margin-left: -116px; transform: none; }
  .steps { display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; margin: 0 calc(-1 * var(--gutter)); padding: 4px var(--gutter) 16px; scrollbar-width: none; }
  .steps::-webkit-scrollbar { display: none; }
  .step { flex: 0 0 84%; min-height: 0; justify-content: flex-start; scroll-snap-align: center; padding: 20px; border-radius: 22px; background: var(--card); border: 1px solid var(--line); opacity: .5; }
  .step h3 { font-size: 1.45rem; }
  .step p { font-size: .98rem; }
  .tiers { grid-template-columns: 1fr; }
  .beta-row { flex-direction: column; }
  .foot { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}