/* ===========================================================================
   Motion Frequency homepage.

   Same architecture as the Polson page — pinned hero driven by scroll, a
   scrubbed act, story, decisions, proof, horizontal run, what it knows, the
   offer, pricing — in Motion Frequency's own palette: near-black, because
   every room is lit against black, with the ochre of the app's legal pages
   and the teal of its mark. The shared parts (burger, motion primitives) come
   from site-nav.css and motion.css.

   The hero's device is the product's own move: the dial, climbing. Your
   scroll steps a phone through real screens from the app in rising order of
   the frequency each was captured at, the way a finger drags the hum up. No
   recreations anywhere — every picture of the app is a screenshot or one of
   its own exported tile clips, muted. The noise the hero clears out of is a
   drift of named frequencies with promises attached, which is exactly the
   thing the app declines to make.

   Nothing is pinned unless JS is running and motion is welcome: the tall
   scroll-driven scenes switch on under html.mf-scrub. With JS off or reduced
   motion, every act is an ordinary section showing its final state, and the
   rooms scroll sideways by hand.
   =========================================================================== */

:root{
  --measure: 680px;   /* shared text column, so headline and body are one block */
  --ink:     #f3efe7;
  --dim:     #a9a397;
  --faint:   #7b7569;
  --murk:    #060607;
  --clear:   #0b0b0c;
  --line:    rgba(255,255,255,.11);
  --ochre:   #e0a458;
  --gold:    #f2c27a;
  --teal:    #5cc8b8;
  --grad:    linear-gradient(120deg,#f2c27a 0%,#e0a458 48%,#5cc8b8 100%);
  --rail:    linear-gradient(90deg,#e0a458,#5cc8b8);
  --display: "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --sans:    "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.mf{background:var(--murk);color:var(--ink);font-family:var(--sans);overflow-x:clip}
.mf .wrap{max-width:1180px;margin:0 auto;padding:0 26px}
.dsp{font-family:var(--display);font-weight:700;letter-spacing:-.035em;line-height:.98}
.eyebrow-x{font-size:11.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--ochre);font-weight:600}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* --- kinetic type (shared behaviour with the Polson page) ------------------ */
[data-split] .w{display:inline-block;white-space:nowrap}
[data-split] .c{display:inline-block;overflow:hidden;vertical-align:top;
  padding-bottom:.26em;margin-bottom:-.26em}
[data-split] .c > i{display:inline-block;font-style:inherit;
  transform:translateY(calc(100% + .3em));
  transition:transform .85s cubic-bezier(.16,.84,.3,1);transition-delay:calc(var(--ci,0) * 26ms)}
[data-split].is-in .c > i{transform:none}
@media (prefers-reduced-motion: reduce){ [data-split] .c > i{transform:none !important;transition:none !important} }

/* ===== ACT 1 — the rooms, climbing under the scroll ======================= */
/* Static by default: a full screen that shows the finished state. The tall,
   pinned version is switched on by the page script. */
.hero-scene{position:relative}
.hero-pin{position:relative;min-height:100svh;overflow:hidden;isolation:isolate;
  display:flex;align-items:center;justify-content:center;padding:96px 0 64px}
.mf-scrub .hero-scene{height:280vh}
.mf-scrub .hero-pin{position:sticky;top:0;height:100svh;min-height:0;padding:62px 0 0}
@media(max-width:760px){ .mf-scrub .hero-scene{height:240vh} .mf-scrub .hero-pin{padding-top:96px} }

/* The noise: named frequencies, each with a promise attached, drifting past. */
.hzfield{position:absolute;inset:-8%;z-index:0;pointer-events:none;transition:opacity 1.2s ease}
.hzfield[data-fade="1"]{opacity:.16}
.hz{position:absolute;font-family:var(--display);font-weight:700;letter-spacing:-.03em;
  font-size:clamp(20px,3vw,40px);color:var(--dim);opacity:.22;white-space:nowrap;filter:blur(1.4px);
  animation:hzdrift linear infinite}
.hz small{font-size:.45em;letter-spacing:.14em;text-transform:uppercase;margin-left:.35em;font-weight:600}
@keyframes hzdrift{from{transform:translate3d(0,0,0)}to{transform:translate3d(0,-150vh,0)}}
@media (prefers-reduced-motion: reduce){ .hz{animation:none} }

.glow{position:absolute;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(40% 36% at var(--mx,50%) var(--my,40%),rgba(224,164,88,.16),transparent 70%),
             radial-gradient(54% 48% at 50% 46%,rgba(92,200,184,.07),transparent 72%)}

.hero-in{position:relative;z-index:2;width:100%;max-width:1120px;padding:0 26px;
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:clamp(24px,4vw,64px);align-items:center}
.hero-copy{text-align:left}
.hero-in h1{font-size:clamp(38px,min(7vw,10svh),96px);margin:0}
.hero-sub{margin-top:clamp(12px,2svh,22px);max-width:520px;color:var(--dim);font-size:clamp(15px,1.8vw,18px)}
.hero-pin{flex-direction:column}

/* The phone: real screenshots stacked in one frame, one showing at a time.
   Which one is decided by the scroll; without JS it is simply the Water room. */
.hero-phone{margin:0;justify-self:center;display:flex;flex-direction:column;align-items:center}
.hero-phone .shot{height:clamp(260px,62svh,600px);width:auto}
.hero-phone .slide{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .45s ease}
.hero-phone .slide.on{opacity:1}
@media (prefers-reduced-motion: reduce){ .hero-phone .slide{transition:none} }
.slide-cap{margin-top:14px;display:flex;flex-direction:column;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);font-weight:600}
.slide-dots{display:flex;gap:6px}
.slide-dots i{width:6px;height:6px;border-radius:50%;background:var(--line);transition:background .3s}
.slide-dots i.on{background:var(--ochre)}

@media(max-width:760px){
  .hero-in{grid-template-columns:1fr;gap:10px;text-align:center}
  .hero-copy{text-align:center;display:contents}
  .hero-in h1{order:1}
  .hero-sub{order:2;margin:0 auto;font-size:14px;line-height:1.5}
  .hero-phone{order:3}
  .hero-phone .shot{height:clamp(170px,32svh,360px)}
  .props{order:4}
  .cta{order:5}
  .slide-cap{margin-top:8px;font-size:11px;gap:6px}
  .slide-dots{display:none}
}
/* A short phone can't hold the whole pinned hero; the sentence under the
   headline is the part that can go, since the acts below say it at length. */
@media(max-width:760px) and (max-height:740px){ .mf-scrub .hero-sub{display:none} }

.hint{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);z-index:3;color:var(--faint);
  font-size:10.5px;letter-spacing:.26em;text-transform:uppercase;display:none;flex-direction:column;
  align-items:center;gap:8px;transition:opacity .5s ease}
.mf-scrub .hint{display:flex}
.hint[data-done="1"]{opacity:0}
.hint i{width:1px;height:36px;background:linear-gradient(var(--ochre),transparent);
  animation:hpulse 2s ease-in-out infinite}
@keyframes hpulse{0%,100%{opacity:.2;transform:scaleY(.5);transform-origin:top}50%{opacity:1;transform:scaleY(1)}}
@media (prefers-reduced-motion: reduce){ .hint i{animation:none} }

/* --- The three propositions -----------------------------------------------
   They land one at a time under the scroll once the screens have climbed,
   so each gets a beat of its own. Visible by default; hidden only when the
   scroll is there to bring them in. */
.props{display:grid;grid-template-columns:1fr;gap:9px;margin:clamp(16px,3svh,30px) 0 0;
  max-width:520px;text-align:left}
.prop{border:1px solid var(--line);border-radius:14px;padding:12px 18px;display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  background:rgba(255,255,255,.035);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.mf-scrub .prop{opacity:0;transform:translate3d(0,20px,0);
  transition:opacity .6s cubic-bezier(.22,.61,.36,1),transform .6s cubic-bezier(.22,.61,.36,1)}
.mf-scrub .prop.in{opacity:1;transform:none}
.prop b{display:block;font-weight:700;letter-spacing:-.025em;color:var(--ink);
  font-size:clamp(17px,1.9vw,21px);line-height:1.15;white-space:nowrap}
.prop span{display:block;color:var(--faint);font-size:14px;text-align:right}
@media(max-width:760px){
  .props{gap:6px;max-width:420px;width:100%}
  .cta{justify-content:center;margin-top:4px}
  .props{margin:0 auto}
  .prop{padding:9px 14px;border-radius:12px}
  .prop b{font-size:16px}
  .prop span{font-size:12.5px}
}

/* Not on the App Store yet, so the status is the honest call to action. */
.cta{display:flex;gap:12px;align-items:center;justify-content:flex-start;flex-wrap:wrap;margin-top:clamp(14px,2.6svh,28px)}
.cta .status{display:inline-flex;align-items:center;gap:9px;padding:11px 20px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--ink);
  font-size:14.5px;font-weight:600}
.cta .status .dot,.pill-x .dot{width:7px;height:7px;border-radius:50%;background:var(--ochre);
  box-shadow:0 0 11px var(--ochre)}

.stats{position:relative;z-index:2;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:clamp(14px,3svh,36px) auto 0;
  width:100%;max-width:820px;padding:0 20px;align-items:end}
/* On a short phone screen the pinned hero has no room for the stats as well;
   they are repeated, in full, in the offer below. */
@media(max-width:760px) and (max-height:860px){ .mf-scrub .stats{display:none} }
.stats .stat{text-align:center;padding:0 8px;position:relative}
.stats .stat + .stat:before{content:"";position:absolute;left:0;top:14%;bottom:14%;width:1px;background:var(--line)}
.stats b{display:block;font-size:clamp(34px,min(7vw,8svh),76px);font-weight:800;letter-spacing:-.045em;
  line-height:.92;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  white-space:nowrap}
.stats span{display:block;margin-top:10px;color:var(--ink);font-size:clamp(12px,1.5vw,15px);font-weight:500;line-height:1.3}
@media(max-width:560px){
  .stats{gap:4px}
  .stats .stat{padding:0 4px}
  .stats b{font-size:clamp(26px,8.4vw,40px)}
  .stats span{font-size:11.5px;margin-top:7px}
}

/* ===== ACT 2 — the sum, worked out while you listen ======================= */
.act-sum{position:relative;background:var(--murk)}
.act-sum .pin{display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:clamp(80px,14vh,150px) 26px}
.mf-scrub .act-sum{height:250vh}
.mf-scrub .act-sum .pin{position:sticky;top:0;height:100svh;padding:0 26px}
@media(max-width:760px){ .mf-scrub .act-sum{height:210vh} }
.cost-line{color:var(--dim);font-size:clamp(15px,2vw,18px);margin-top:6px}
.cost-line b{color:var(--ink);font-weight:500}
.bignum{font-family:var(--display);font-weight:700;letter-spacing:-.04em;font-size:clamp(70px,20vw,250px);line-height:.9;
  color:transparent;background:var(--grad);-webkit-background-clip:text;background-clip:text;
  font-variant-numeric:tabular-nums;margin-top:18px;transform:scale(calc(.88 + var(--s,1) * .12))}
.mf-scrub .bignum{transform:scale(calc(.88 + var(--s,0) * .12))}
.bignum-l{font-size:11.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--faint);margin-top:8px}
.costbar{width:min(560px,84vw);height:2px;background:var(--line);margin-top:28px;overflow:hidden}
.costbar i{display:block;height:100%;background:var(--rail);transform:scaleX(var(--s,1));transform-origin:0 50%}
.mf-scrub .costbar i{transform:scaleX(var(--s,0))}
.cost-copy{margin-top:24px;max-width:580px;color:var(--dim);font-size:clamp(15.5px,2.1vw,18px)}
.cost-copy b{color:var(--ink)}
.cost-copy small{display:block;margin-top:12px;font-size:13px;color:var(--faint)}

/* ===== ACT 3 / 3b — story and decisions =================================== */
.act-turn{background:linear-gradient(180deg,var(--murk),var(--clear));
  padding:clamp(80px,14vh,150px) 0;text-align:center}
.act-turn h2{font-size:clamp(30px,5.2vw,60px);max-width:var(--measure);margin:16px auto 0}
.rule{width:1px;height:clamp(56px,9vh,100px);margin:0 auto;
  background:linear-gradient(transparent,var(--ochre),transparent)}
.story{max-width:var(--measure);margin:28px auto 0;text-align:center}
.story p{margin-top:18px;color:var(--dim);font-size:clamp(15.5px,2vw,17.5px);line-height:1.68}
.story p b{color:var(--ink);font-weight:500}
.sig{color:var(--faint) !important;font-size:14px !important;font-style:italic;margin-top:22px !important}

.act-rules{background:var(--clear);padding:clamp(70px,12vh,130px) 0;text-align:center}
.act-rules h2{font-size:clamp(32px,5.5vw,64px);max-width:var(--measure);margin:14px auto 0}
.act-rules .story{margin:22px auto 0}
.act-rules .story.closing{margin-top:44px}
.rules{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
@media(max-width:860px){.rules{grid-template-columns:1fr;gap:18px}}
.rule-c{border-top:1px solid var(--line);padding-top:22px;text-align:left}
.rule-c .rn{font-family:var(--display);font-size:52px;font-weight:700;letter-spacing:-.04em;line-height:1;color:var(--ochre)}
.rule-c .rn small{font-size:.4em;letter-spacing:0;margin-left:4px;color:var(--faint);font-weight:600}
.rule-c h3{font-size:17px;font-weight:600;margin-top:12px}
.rule-c p{color:var(--dim);font-size:14.5px;margin-top:10px}

/* ===== ACT 4 — proof: the app, in real screens ============================ */
.act-proof{background:var(--clear);padding:clamp(70px,12vh,130px) 0}
.act-proof .head{text-align:center;max-width:var(--measure);margin:0 auto}
.act-proof h2{font-size:clamp(30px,5.2vw,60px);margin-top:14px}
.act-proof .head p{color:var(--dim);margin-top:16px;font-size:16.5px}
.act-proof .head p b{color:var(--ink);font-weight:500}
.proof-shots{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(12px,3vw,34px);margin:48px auto 0;max-width:960px}
.proof-shots figure{margin:0}
.proof-shots figcaption{margin-top:16px;color:var(--dim);font-size:14px;line-height:1.5;text-align:center}
.proof-shots figcaption b{display:block;color:var(--ink);font-size:16px;font-weight:600;margin-bottom:3px}
@media(max-width:760px){ .proof-shots{grid-template-columns:1fr;max-width:280px;gap:40px} }

/* ===== ACT 5 — the rooms, travelling sideways ============================= */
/* By default the run is a row you scroll sideways yourself. Pinned and driven
   by the page's scroll only when motion is on. */
.act-rooms{position:relative;background:var(--clear);padding:clamp(70px,12vh,120px) 0}
.act-rooms .pin{display:flex;flex-direction:column;justify-content:center}
.run-head{padding:0 26px;max-width:1180px;margin:0 auto 26px;width:100%;text-align:center}
.run-head h2{font-size:clamp(30px,5vw,58px);margin-top:12px}
.run-sub{color:var(--dim);font-size:15.5px;margin:12px auto 0;max-width:var(--measure)}
.run{display:flex;gap:16px;padding:0 26px 14px;overflow-x:auto;scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch}
.run > *{scroll-snap-align:start}
.mf-scrub .act-rooms{height:700vh;padding:0}
.mf-scrub .act-rooms .pin{position:sticky;top:0;height:100svh;overflow:hidden;padding-top:40px}
.mf-scrub .run{overflow:visible;padding-bottom:0;will-change:transform;
  transform:translate3d(calc(var(--s,0) * -1 * (var(--run-w,6000px) - 100vw)),0,0)}
@media(max-width:760px){ .mf-scrub .act-rooms{height:620vh} .mf-scrub .act-rooms .pin{padding-top:90px} }
.rcard{flex:0 0 clamp(196px,21vw,252px);border:1px solid var(--line);border-radius:18px;overflow:hidden;
  background:linear-gradient(165deg,rgba(224,164,88,.06),rgba(255,255,255,.025));display:flex;flex-direction:column}
.rcard .media{position:relative;aspect-ratio:320/298;background:#000}
.rcard video,.rcard .media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.rcard .body{padding:14px 16px 18px}
.rcard .n{font-family:var(--display);font-size:13px;color:var(--ochre);letter-spacing:.1em;font-weight:600}
.rcard h3{font-family:var(--display);font-size:24px;letter-spacing:-.03em;margin-top:4px}
.rcard p{color:var(--dim);font-size:13.5px;margin-top:6px;line-height:1.45}
.runbar{max-width:1180px;margin:24px auto 0;padding:0 26px;width:100%;display:none}
.mf-scrub .runbar{display:block}
.runbar i{display:block;height:2px;background:var(--rail);transform:scaleX(var(--s,0));transform-origin:0 50%}
.run-note{max-width:1180px;margin:18px auto 0;padding:0 26px;color:var(--faint);font-size:13px;text-align:center}

/* ===== What it knows ====================================================== */
.act-data{background:linear-gradient(180deg,var(--clear),#0e0d0c);padding:clamp(80px,14vh,150px) 0}
.act-data .head,.offer-head{text-align:center;max-width:var(--measure);margin:0 auto}
.act-data h2,.act-offer h2{font-size:clamp(30px,5.2vw,60px);margin:14px auto 0;max-width:var(--measure)}
.act-data .lead,.offer-head .lead{color:var(--dim);font-size:17.5px;margin-top:20px}
.data-shots{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:52px auto 0;max-width:900px}
@media(max-width:760px){ .data-shots{gap:10px} }
.data-shots figure{margin:0}
.data-shots figcaption{margin-top:12px;color:var(--faint);font-size:12.5px;text-align:center;line-height:1.4}

.callout{max-width:820px;margin:56px auto 0;padding:34px 32px;border-radius:22px;text-align:left;
  border:1px solid rgba(224,164,88,.30);
  background:linear-gradient(160deg,rgba(224,164,88,.10),rgba(255,255,255,.025))}
.callout p{font-size:clamp(19px,2.6vw,27px);font-weight:600;letter-spacing:-.02em;line-height:1.42;color:var(--ink)}
.callout p b{color:var(--ochre);font-weight:600}
.callout .sub{margin-top:14px;font-size:14.5px;font-weight:400;color:var(--dim);letter-spacing:0;line-height:1.6}
@media(max-width:560px){ .callout{padding:26px 22px} }

.promise{display:grid;grid-template-columns:repeat(2,1fr);gap:0;margin:60px auto 0;max-width:900px;border-top:1px solid var(--line)}
@media(max-width:760px){ .promise{grid-template-columns:1fr} }
.promise div{padding:22px 0;border-bottom:1px solid var(--line);text-align:left}
.promise div:nth-child(odd){padding-right:30px}
.promise div:nth-child(even){padding-left:30px;border-left:1px solid var(--line)}
@media(max-width:760px){ .promise div{padding:20px 0 !important;border-left:none !important} }
.promise h3{font-size:16.5px;font-weight:600}
.promise p{color:var(--dim);font-size:14.5px;margin-top:8px}
.data-note{max-width:700px;margin:34px auto 0;color:var(--faint);font-size:14px;text-align:center;font-style:italic}
.data-note a,.price-note a,.safety a{color:var(--ochre);text-decoration:underline;text-underline-offset:2px}

/* ===== The offer ========================================================== */
.act-offer{position:relative;background:linear-gradient(180deg,#0e0d0c,var(--clear));
  padding:clamp(80px,14vh,150px) 0;overflow:hidden}
.act-offer:before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(50% 40% at 50% 0%,rgba(224,164,88,.09),transparent 70%)}
.act-offer .wrap{position:relative}
.figures{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:56px auto 0;max-width:960px}
@media(max-width:820px){ .figures{grid-template-columns:repeat(2,1fr);gap:26px 10px} }
.fig{text-align:center;position:relative;padding:0 10px}
.fig + .fig:before{content:"";position:absolute;left:0;top:10%;bottom:22%;width:1px;background:var(--line)}
@media(max-width:820px){ .fig:nth-child(odd):before{display:none} }
.fig b{display:block;font-size:clamp(38px,6.5vw,72px);font-weight:800;letter-spacing:-.045em;line-height:.95;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.fig span{display:block;margin-top:11px;color:var(--ink);font-size:14.5px;font-weight:500}
.fig em{display:block;margin-top:5px;color:var(--faint);font-size:13px;font-style:normal}

.shots{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:60px auto 0;max-width:900px}
@media(max-width:760px){ .shots{gap:10px} }
.shots figure{margin:0}
.shots figcaption{margin-top:12px;color:var(--faint);font-size:12.5px;text-align:center;line-height:1.4}
.shots-cap{text-align:center;color:var(--faint);font-size:13px;margin-top:18px}

/* An iPhone, drawn in CSS rather than shipped as artwork (as on the Polson
   page). The screenshots are 1179x2556 full-screen captures, so the Dynamic
   Island sits over the gap the capture already leaves in the status bar. */
.shot{aspect-ratio:9/19.5;position:relative;border-radius:clamp(22px,3.4vw,42px);padding:clamp(4px,.72vw,9px);
  background:linear-gradient(155deg,#4a4f57 0%,#23262c 18%,#101216 52%,#2c3037 88%,#0b0c0f 100%);
  box-shadow:0 34px 70px rgba(0,0,0,.55),0 4px 14px rgba(0,0,0,.4),inset 0 0 0 1px rgba(255,255,255,.10)}
.shot .screen{display:block;position:relative;width:100%;height:100%;overflow:hidden;background:#000;
  border-radius:clamp(18px,2.7vw,34px);isolation:isolate}
.shot img{width:100%;height:100%;object-fit:cover;display:block;object-position:top center;border-radius:inherit}
.shot .screen:after{content:"";position:absolute;inset:0;border-radius:inherit;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.07);pointer-events:none;z-index:3}
.shot .screen .island{position:absolute;left:50%;top:1.3%;transform:translateX(-50%);
  width:31.8%;height:4.3%;border-radius:999px;background:#000;z-index:2}
.shot:before,.shot:after{content:"";position:absolute;width:2px;border-radius:2px;
  background:linear-gradient(180deg,#3a3f47,#1a1d22);z-index:1}
.shot:before{left:-2px;top:22%;height:9%}
.shot:after{right:-2px;top:26%;height:13%}
@media(max-width:760px){ .shot:before,.shot:after{display:none} }

/* ===== Pricing ============================================================ */
.act-price{background:var(--clear);padding:clamp(80px,14vh,150px) 0;text-align:center}
.act-price h2{font-size:clamp(30px,5.2vw,60px);max-width:var(--measure);margin:14px auto 0}
.act-price .lead{max-width:var(--measure);margin:20px auto 0;color:var(--dim);font-size:17px}
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:52px auto 0;max-width:1000px;text-align:left}
@media(max-width:860px){ .tiers{grid-template-columns:1fr;max-width:460px} }
.tier{border:1px solid var(--line);border-radius:20px;padding:28px 26px;background:rgba(255,255,255,.028);
  display:flex;flex-direction:column;text-align:left}
.tier.feature{border-color:rgba(224,164,88,.45);background:linear-gradient(165deg,rgba(224,164,88,.10),rgba(255,255,255,.03))}
.tier .amt{font-size:clamp(34px,4.6vw,48px);font-weight:700;letter-spacing:-.03em;line-height:1}
.tier.feature .amt{color:var(--ochre)}
.tier .per{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);margin-top:9px}
.tier h3{font-size:17px;font-weight:600;margin-top:18px}
.tier p{color:var(--dim);font-size:14.5px;margin-top:9px}
.tier ul{list-style:none;margin-top:14px;padding:0}
.tier li{color:var(--dim);font-size:14px;margin-top:8px;padding-left:18px;position:relative}
.tier li:before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--faint)}
.tier.feature li:before{background:var(--ochre)}
.tier li b{color:var(--ink);font-weight:600}
.price-foot{margin:34px auto 0;color:var(--faint);font-size:14.5px;max-width:640px}
.price-foot b{color:var(--ink)}
.price-note{margin:14px auto 0;max-width:560px;color:var(--faint);font-size:13px}
.safety{max-width:720px;margin:40px auto 0;padding:20px 24px;border-radius:16px;border:1px solid var(--line);
  background:rgba(255,255,255,.025);text-align:left;color:var(--dim);font-size:14px;line-height:1.6}
.safety b{color:var(--ink);font-weight:600}
.pill-x{display:inline-flex;align-items:center;gap:9px;margin-top:32px;padding:12px 22px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--dim);font-size:14.5px;font-weight:600}

/* ===== The instrument — the sound engine, from the app's own Learn page == */
.act-sound{background:linear-gradient(180deg,var(--clear),#0e0d0c);padding:clamp(70px,12vh,130px) 0}
.act-sound .head,.act-known .head{text-align:center;max-width:var(--measure);margin:0 auto}
.act-sound h2,.act-known h2{font-size:clamp(30px,5.2vw,60px);margin-top:14px}
.act-sound .head p,.act-known .head p{color:var(--dim);margin-top:16px;font-size:16.5px}
.act-sound .head p b,.act-known .head p b{color:var(--ink);font-weight:500}
.presets{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:48px auto 0;max-width:980px}
.preset{border:1px solid var(--line);border-radius:16px;padding:18px 18px 20px;text-align:left;
  background:linear-gradient(165deg,rgba(224,164,88,.07),rgba(92,200,184,.03))}
.preset:nth-child(even){background:linear-gradient(165deg,rgba(92,200,184,.07),rgba(224,164,88,.03))}
.preset h3{font-family:var(--display);font-size:22px;letter-spacing:-.03em;background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.preset p{color:var(--dim);font-size:13.5px;line-height:1.5;margin-top:8px}
.presets-note,.sound-foot{max-width:var(--measure);margin:22px auto 0;text-align:center;color:var(--faint);font-size:14px}
.sound-foot{margin-top:40px;color:var(--dim);font-size:15.5px}
.promise.controls{margin-top:56px}
.promise.controls p{color:var(--dim);font-size:14.5px;margin-top:6px}
@media(max-width:860px){ .presets{grid-template-columns:repeat(2,1fr)} }

/* ===== The known frequencies — they say, then the record ================ */
.act-known{background:#0e0d0c;padding:clamp(70px,12vh,130px) 0}
.known{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:48px auto 0;max-width:1080px}
.kcard{border:1px solid var(--line);border-radius:18px;padding:22px 22px 24px;text-align:left;background:rgba(255,255,255,.02)}
.kcard .kn{font-family:var(--display);font-weight:700;font-size:40px;letter-spacing:-.04em;line-height:1;color:var(--ochre)}
.kcard .kn small{font-size:.38em;letter-spacing:0;margin-left:5px;color:var(--faint);font-weight:600}
.kcard .kn.kw{font-size:26px;line-height:1.15}
.kcard .kn.multi{font-size:clamp(26px,2.6vw,32px);white-space:nowrap}
.kcard .reach{display:inline-block;margin-top:12px;padding:3px 10px;border-radius:999px;border:1px solid var(--line);
  font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);font-weight:600}
.kcard .reach.on{color:var(--teal);border-color:rgba(92,200,184,.4)}
.kcard h4{margin-top:16px;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--faint);font-weight:600}
.kcard p{color:var(--dim);font-size:14px;line-height:1.55;margin-top:6px}
.kcard h4 + p{color:var(--ink)}
.kcard h4:nth-of-type(2) + p{color:var(--dim)}
.callout.own{margin-top:48px}
@media(max-width:960px){ .known{grid-template-columns:repeat(2,1fr)} }
@media(max-width:620px){ .known{grid-template-columns:1fr} .presets{grid-template-columns:1fr} }