:root {
  --paper: #F3F1EC;
  --paper-2: #E7E4DC;
  --ink: #0B0B0B;
  --gray: #6B6A66;
  --line: #CFCBC2;
  --water: #A9CFE3;
  --water-deep: #6FA8C7;
  --head: "Inter Tight", "Helvetica Neue", Arial, sans-serif;
  --body: "Inter", "Helvetica Neue", Arial, sans-serif;
  --gut: clamp(16px, 3.2vw, 44px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--water-deep); outline-offset: 3px; }

.label {
  font-family: var(--body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  margin: 0 0 12px;
}

/* NAV */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 20;
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px var(--gut);
  background: rgba(243, 241, 236, .86);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-brand {
  font-family: var(--head); font-weight: 800; font-size: 18px;
  text-decoration: none; letter-spacing: -.02em; white-space: nowrap;
}
.nav-links { list-style: none; margin: 0; padding: 0; display: flex; gap: clamp(14px, 3vw, 34px); }
.nav-links a {
  font-size: 11px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
  text-decoration: none; padding: 6px 0; border-bottom: 2px solid transparent;
}
.nav-links a:hover { border-color: var(--ink); }

/* HERO */
.hero {
  position: relative;
  min-height: max(100vh, 600px);
  min-height: max(100svh, 600px);
  display: grid;
  place-items: center;
  padding: 90px 0 0;
  overflow: hidden;
}
.hero-center {
  position: relative; z-index: 2;
  text-align: center;
  padding: 0 var(--gut);
  margin-bottom: 4vh;
}
.wordmark {
  margin: 0;
  font-family: var(--head);
  font-weight: 900;
  font-size: clamp(64px, 12.6vw, 240px);
  line-height: .86;
  letter-spacing: -.055em;
  display: flex; gap: .12em; justify-content: center; align-items: baseline;
  white-space: nowrap;
  will-change: transform;
}
.wordmark .amp { font-weight: 500; letter-spacing: 0; font-style: italic; }
.credit {
  margin: clamp(18px, 2.4vw, 34px) auto 0;
  font-size: clamp(9px, .8vw, 11px);
  font-weight: 600;
  letter-spacing: .24em;
  line-height: 1.9;
  text-transform: uppercase;
  color: var(--ink);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  padding: 10px 0;
  width: max-content;
  max-width: 100%;
  will-change: transform;
}
.head {
  position: absolute; bottom: 0; z-index: 1;
  width: clamp(150px, 22vw, 440px);
  will-change: transform;
  transform-origin: 50% 90%;
}
.head img { width: 100%; }
.head-l { left: -2vw; bottom: 3vh; width: clamp(150px, 19vw, 380px); }
.head-r { right: -2vw; bottom: 3vh; width: clamp(170px, 22vw, 440px); }

/* HUD CAPTIONS */
.hud {
  position: absolute; z-index: 3; margin: 0;
  font-size: 10px; font-weight: 600; letter-spacing: .18em; line-height: 1.7;
  text-transform: uppercase; color: var(--gray);
}
.hud-tl { top: 84px; left: var(--gut); }
.hud-tr { top: 84px; right: var(--gut); text-align: right; }
.hud-bl, .hud-br { bottom: 14px; z-index: 3; }
.hud-bl { left: 50%; transform: translateX(-130%); display: none; }
.hud-br { right: var(--gut); text-align: right; display: none; }
.wordmark span { display: inline-block; will-change: transform; }

/* TICKER */
.ticker {
  background: var(--ink); color: var(--paper);
  overflow: hidden; white-space: nowrap;
  border-block: 1px solid var(--ink);
}
.ticker-track { display: inline-flex; animation: tick 38s linear infinite; }
.ticker span {
  font-family: var(--head); font-weight: 800; text-transform: uppercase;
  font-size: clamp(16px, 2vw, 26px); letter-spacing: .02em;
  padding: 12px 0;
}
.ticker span::after { content: "\2726"; margin: 0 clamp(16px, 2.4vw, 34px); color: var(--water); }
@keyframes tick { to { transform: translateX(-50%); } }

/* SPLIT */
.split { display: grid; grid-template-columns: 1fr; }
.half {
  position: relative; overflow: hidden;
  padding: clamp(40px, 6vw, 88px) var(--gut) 0;
  min-height: 640px;
  display: flex; flex-direction: column;
}
.ebb { background: var(--paper-2); }
.flow { background: var(--ink); color: var(--paper); }
.big {
  font-family: var(--head); font-weight: 900;
  font-size: clamp(88px, 17vw, 270px);
  line-height: .8; letter-spacing: -.06em; margin: 0;
}
.flow .big { color: var(--paper); }
.flow .big::after {
  content: ""; display: block; height: .09em; margin-top: .08em; width: 100%;
  background:
    radial-gradient(circle at 50% 100%, transparent 58%, var(--water) 60% 100%) 0 0 / .22em 100% repeat-x;
}
.tagline {
  font-family: var(--head); font-weight: 800; font-size: clamp(26px, 3.2vw, 44px);
  letter-spacing: -.02em; margin: 22px 0 6px; line-height: 1.05;
}
.lede { max-width: 30ch; margin: 0; font-size: 18px; color: inherit; opacity: .8; }
.cards {
  position: relative; z-index: 2;
  display: grid; gap: 14px; margin-top: 30px;
  max-width: 440px;
}
.card {
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 18px;
  padding: 18px 20px 20px;
  box-shadow: 5px 5px 0 var(--ink);
  transition: transform .2s ease, box-shadow .2s ease;
}
.flow .card { border-color: var(--water); box-shadow: 5px 5px 0 var(--water); }
.card:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); }
.flow .card:hover { box-shadow: 7px 7px 0 var(--water); }
.card h3 { font-family: var(--head); font-weight: 800; font-size: 24px; line-height: 1.05; letter-spacing: -.02em; margin: 12px 0 6px; }
.card p { margin: 0; font-size: 15px; color: #2a2a2a; }
.status {
  display: inline-block; font-size: 10px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  border: 1.5px solid var(--ink); border-radius: 99px; padding: 4px 10px;
}
.flow .status { background: var(--water); border-color: var(--water); }
.half-head {
  position: relative; z-index: 1;
  margin: 28px auto 0;
  padding-top: 8px;
  width: max-content;
  transform-origin: 50% 100%;
  will-change: transform;
}
.half-head img { height: clamp(360px, 62vw, 470px); width: auto; }
.flow .half-head img { height: clamp(300px, 52vw, 390px); }
.flow .half-head::before { content: none; }

/* STORY */
.story {
  padding: clamp(60px, 9vw, 140px) var(--gut);
  display: grid; gap: 28px;
  border-bottom: 1px solid var(--ink);
  background:
    repeating-linear-gradient(0deg, transparent 0 31px, rgba(0,0,0,.05) 31px 32px);
}
.story-title {
  font-family: var(--head); font-weight: 900;
  font-size: clamp(44px, 9.6vw, 170px);
  line-height: .9; letter-spacing: -.05em; margin: 0; max-width: 14ch;
}
.story-body { display: grid; gap: 18px; max-width: 640px; font-size: clamp(18px, 1.6vw, 22px); line-height: 1.5; margin-left: auto; }
.story-body p { margin: 0; }


/* SAY HI */
.hi {
  background: var(--paper-2);
  padding: clamp(48px, 7vw, 110px) var(--gut);
  display: grid; gap: 40px;
  border-bottom: 1px solid var(--ink);
}
.hi .big { font-size: clamp(72px, 15vw, 240px); }
.hi .lede { margin-top: 20px; opacity: .8; }
.hi .big::after { content: ""; display: block; height: .09em; margin-top: .08em; background: var(--water); }
.mail {
  display: inline-block; margin-top: 22px;
  font-family: var(--head); font-weight: 800; font-size: clamp(20px, 2.8vw, 36px);
  letter-spacing: -.02em; word-break: break-all;
  border-bottom: 3px solid var(--ink); text-decoration: none;
}
.mail:hover { background: var(--water); }
.signup {
  align-self: end;
  background: var(--paper);
  border: 2px solid var(--ink); border-radius: 22px; box-shadow: 6px 6px 0 var(--water-deep);
  padding: clamp(20px, 2.6vw, 34px);
}
.signup-label { display: block; font-family: var(--head); font-weight: 800; font-size: clamp(22px, 2.4vw, 32px); line-height: 1.05; letter-spacing: -.02em; margin-bottom: 16px; }
.signup-row { display: flex; gap: 10px; flex-wrap: wrap; }
.signup input {
  flex: 1 1 200px; min-width: 0;
  font: inherit; font-size: 16px;
  padding: 14px 16px; border: 2px solid var(--ink); border-radius: 12px; background: #fff; color: var(--ink);
}
.signup button {
  flex: 0 0 auto;
  font-family: var(--head); font-weight: 800; font-size: 16px;
  padding: 14px 22px; border: 2px solid var(--ink); border-radius: 12px;
  background: var(--ink); color: var(--paper); cursor: pointer;
  transition: transform .15s ease;
}
.signup button:hover { transform: translateY(-2px); }
.signup-msg { margin: 12px 0 0; min-height: 1.5em; font-size: 15px; font-weight: 500; }
.signup-msg.err { color: #8a1c1c; }

/* FOOTER */
.footer {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 22px var(--gut) 28px;
  font-size: 11px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
}
.footer p { margin: 0; }
.footer a { text-decoration: none; border-bottom: 1px solid var(--ink); }

/* DESKTOP */
@media (min-width: 900px) {
  .split { grid-template-columns: 1fr 1fr; }
  .half { min-height: 0; padding-bottom: 56px; }
  .story { grid-template-columns: 1.4fr 1fr; align-items: start; }
  .story .label { grid-column: 1 / -1; margin-bottom: 0; }
  .story-body { margin-top: .6em; }
  .hi { grid-template-columns: 1.1fr 1fr; align-items: end; }
}

/* WIDE DESKTOP: boy stands beside the cards in his own column, so nothing can overlap */
@media (min-width: 1100px) {
  .half {
    display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-rows: auto 1fr;
    column-gap: 18px; padding-bottom: 0;
  }
  .half-top { grid-column: 1; grid-row: 1; }
  .cards { grid-column: 1; grid-row: 2; align-self: start; padding-bottom: 64px; }
  .half-head { grid-column: 2; grid-row: 1 / 3; align-self: end; margin: 0; padding: 0; }
  .half-head img { height: clamp(340px, 30vw, 560px); }
  .flow .half-head img { height: clamp(290px, 25.5vw, 470px); }
  .big { font-size: clamp(88px, 11.5vw, 230px); }
}

/* PHONES */
@media (max-width: 899px) {
  .hero { min-height: max(100vh, 780px); min-height: max(100svh, 780px); padding-top: 86px; place-items: start center; }
  .hero-center { margin-top: 6vh; }
  .wordmark { font-size: 19vw; }
  .head-l { left: -7vw; width: min(57vw, 320px); }
  .head-r { right: -7vw; width: min(65vw, 366px); }
  .nav-brand { font-size: 15px; }
  .nav-links { gap: 12px; }
  .nav-links a { font-size: 10px; letter-spacing: .1em; }
}
@media (max-width: 899px) { .hud { display: none; } }
@media (min-width: 600px) and (max-width: 899px) { .hero { min-height: max(100vh, 900px); min-height: max(100svh, 900px); } }
@media (max-width: 380px) {
  .nav-brand { display: none; }
  .nav { justify-content: center; }
}

/* REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ticker-track { animation: none; }
  .card, .signup button { transition: none; }
  .head, .half-head, .wordmark, .credit, .wordmark span { transform: none !important; }
}

/* ---------- APP DEMO PAGES ---------- */
a.card { display: block; position: relative; color: var(--ink); text-decoration: none; }
.card-go { position: absolute; top: 16px; right: 20px; font-family: var(--head); font-weight: 800; font-size: 22px; transition: transform .2s ease; }
a.card:hover .card-go { transform: translateX(4px); }

.sub-hero { padding: 120px var(--gut) clamp(40px, 6vw, 80px); }
.theme-ebb .sub-hero { background: var(--paper-2); }
.theme-flow .sub-hero { background: var(--ink); color: var(--paper); }
.crumb {
  display: inline-block; margin-bottom: 24px; text-decoration: none;
  font-size: 11px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
  border-bottom: 1px solid currentColor;
}
.sub-title {
  font-family: var(--head); font-weight: 900; margin: 18px 0 0;
  font-size: clamp(44px, 9vw, 150px); line-height: .9; letter-spacing: -.05em; max-width: 14ch;
}
.sub-lede { max-width: 46ch; font-size: clamp(18px, 1.6vw, 22px); margin: 22px 0 0; }
.theme-flow .status { background: var(--water); border-color: var(--water); color: var(--ink); }
.sub-hero .status { margin-top: 8px; }

.demo { padding: clamp(40px, 6vw, 90px) var(--gut); display: grid; gap: 24px; }
.demo h2, .coming h2 {
  font-family: var(--head); font-weight: 900; margin: 0;
  font-size: clamp(30px, 4.4vw, 58px); letter-spacing: -.04em; line-height: 1;
}
.panel {
  background: var(--paper); border: 2px solid var(--ink); border-radius: 22px;
  box-shadow: 6px 6px 0 var(--ink); padding: clamp(18px, 3vw, 36px);
  display: grid; gap: 20px; justify-items: center;
}
.theme-flow .panel { box-shadow: 6px 6px 0 var(--water-deep); }
.controls { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.btn {
  font-family: var(--head); font-weight: 800; font-size: 16px; padding: 12px 18px;
  border: 2px solid var(--ink); border-radius: 12px; background: var(--ink); color: var(--paper);
  cursor: pointer; transition: transform .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn.ghost { background: transparent; color: var(--ink); }
.counter { margin: 0; font-size: 11px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; }
.note { margin: 0; font-size: 14px; color: var(--gray); text-align: center; }

.coming { padding: clamp(40px, 6vw, 90px) var(--gut); display: grid; gap: 22px; background: var(--paper-2); border-top: 1px solid var(--ink); }
.coming ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; max-width: 640px; }
.coming li { font-size: clamp(17px, 1.5vw, 21px); padding-left: 34px; position: relative; }
.coming li::before { content: "\2726"; position: absolute; left: 0; color: var(--water-deep); }
.cta { padding: clamp(36px, 5vw, 70px) var(--gut); display: flex; flex-wrap: wrap; gap: 18px 30px; align-items: center; justify-content: space-between; border-top: 1px solid var(--ink); }
.cta p { margin: 0; font-family: var(--head); font-weight: 800; font-size: clamp(22px, 3vw, 38px); letter-spacing: -.03em; max-width: 24ch; line-height: 1.05; }
.cta a.btn { text-decoration: none; display: inline-block; }

/* flashcards */
.flash { width: min(440px, 100%); aspect-ratio: 4 / 3; perspective: 1000px; border: 0; background: none; padding: 0; cursor: pointer; font: inherit; color: inherit; }
.flash-inner { position: relative; width: 100%; height: 100%; transition: transform .5s ease; transform-style: preserve-3d; }
.flash.flipped .flash-inner { transform: rotateY(180deg); }
.face {
  position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden;
  display: grid; place-content: center; gap: 6px; text-align: center; padding: 16px;
  border: 2px solid var(--ink); border-radius: 18px;
}
.face.front { background: var(--paper-2); }
.face.back { background: var(--ink); color: var(--paper); transform: rotateY(180deg); }
.face .tag { font-size: 10px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; opacity: .7; }
.face .word { font-family: var(--head); font-weight: 900; font-size: clamp(34px, 8vw, 62px); letter-spacing: -.03em; line-height: 1; }
.face .sub { font-size: 18px; opacity: .85; }

/* picture book */
.book { width: min(760px, 100%); display: grid; grid-template-columns: 1fr; border: 2px solid var(--ink); border-radius: 18px; overflow: hidden; background: var(--paper-2); }
.book-art { display: grid; place-items: center; padding: 24px; background: var(--paper); border-bottom: 2px solid var(--ink); }
.book-art svg { width: min(220px, 60%); height: auto; }
.book-text { padding: 24px; display: grid; gap: 8px; align-content: center; text-align: center; min-height: 180px; }
.book-text .l1 { font-family: var(--head); font-weight: 900; font-size: clamp(26px, 5vw, 40px); letter-spacing: -.03em; line-height: 1.05; }
.book-text .l2 { font-size: 19px; }
.book-text .l3 { font-size: 14px; color: var(--gray); font-style: italic; }
.ink { fill: none; stroke: var(--ink); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }

/* hourglass */
.hg { display: grid; gap: 22px; justify-items: center; width: min(720px, 100%); }
.hg-top { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: center; }
.hg svg { width: 120px; height: auto; flex: none; }
.hg-glass { fill: none; stroke: var(--ink); stroke-width: 4; stroke-linejoin: round; }
.hg-sand { fill: var(--water-deep); }
.hg-stream { stroke: var(--water-deep); stroke-width: 3; }
.hg-read { display: grid; gap: 10px; min-width: 220px; }
.hg-read strong { font-family: var(--head); font-weight: 900; font-size: clamp(32px, 6vw, 52px); letter-spacing: -.04em; line-height: 1; }
.bar { height: 14px; border: 2px solid var(--ink); border-radius: 99px; overflow: hidden; background: var(--paper-2); }
.bar > i { display: block; height: 100%; width: 0; background: var(--ink); transition: width .3s ease; }
.hg select { font: inherit; font-size: 16px; padding: 10px 12px; border: 2px solid var(--ink); border-radius: 12px; background: #fff; }
.hg-log { list-style: none; margin: 0; padding: 0; width: 100%; max-height: 150px; overflow: auto; display: grid; gap: 6px; font-size: 15px; }
.hg-log li { display: flex; justify-content: space-between; border-bottom: 1px dashed var(--line); padding-bottom: 4px; }

/* rhythm */
.seq { display: grid; gap: 8px; width: min(640px, 100%); }
.seq-row { display: grid; grid-template-columns: 58px repeat(8, minmax(0, 1fr)); gap: 5px; align-items: center; }
.seq-row > span { font-size: 10px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.step { aspect-ratio: 1; min-width: 0; padding: 0; border: 2px solid var(--ink); border-radius: 10px; background: var(--paper-2); cursor: pointer; }
.step.on { background: var(--ink); }
.step.now { outline: 3px solid var(--water-deep); outline-offset: 1px; }
.tempo { display: flex; align-items: center; gap: 12px; font-size: 11px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.tempo input { width: 160px; accent-color: var(--ink); }

@media (min-width: 700px) {
  .m-book { grid-template-rows: 100%; }
  .book { grid-template-columns: 1fr 1fr; }
  .book-art { border-bottom: 0; border-right: 2px solid var(--ink); }
}
@media (prefers-reduced-motion: reduce) {
  .flash-inner, .bar > i, .card-go, .btn { transition: none; }
}

/* ---------- SCROLL-PINNED METHOD STAGE ---------- */
:root { --navh: 56px; }
.method { border-top: 1px solid var(--ink); background: var(--paper); }
.method-runway { height: calc(100svh + var(--n, 3) * 80svh); position: relative; }
.method-stick {
  position: sticky; top: var(--navh); height: calc(100svh - var(--navh));
  display: grid; grid-template-rows: auto minmax(0, 1fr) auto; gap: 10px;
  padding: 18px var(--gut) 16px; overflow: hidden;
}
.m-head { display: grid; grid-template-columns: 1fr auto; gap: 4px 20px; align-items: end; border-bottom: 1px solid var(--ink); padding-bottom: 12px; }
.m-head .label { grid-column: 1 / -1; margin: 0; }
.m-title { margin: 0; font-family: var(--head); font-weight: 800; font-size: clamp(24px, 4.6vw, 60px); letter-spacing: -.04em; line-height: 1; }
.m-title em { font-style: italic; font-weight: 500; letter-spacing: -.02em; color: var(--water-deep); }
.m-meter { margin: 0; text-align: right; font-size: 10px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; white-space: nowrap; }
.m-meter b { display: block; font-family: var(--head); font-weight: 900; font-size: clamp(22px, 3vw, 38px); letter-spacing: -.03em; }
.m-stage { position: relative; display: grid; place-items: center; min-height: 0; overflow: hidden; }
.m-rail { position: absolute; left: 0; top: 8%; bottom: 8%; width: 2px; background: var(--line); }
.m-rail i { position: absolute; left: 0; top: 0; width: 100%; height: 0; background: var(--ink); }
.m-stage > svg { height: 100%; max-height: 100%; width: auto; max-width: 70%; }
.m-steps { display: grid; border-top: 1px solid var(--ink); padding-top: 12px; }
.m-step { grid-area: 1 / 1; display: grid; grid-template-columns: 34px 1fr; gap: 2px 12px; align-items: start; opacity: 0; transition: opacity .25s ease; pointer-events: none; }
.m-step.on { opacity: 1; pointer-events: auto; }
.m-step .num { font-size: 11px; font-weight: 700; letter-spacing: .1em; padding-top: 6px; }
.m-step h3 { margin: 0; font-family: var(--head); font-weight: 800; font-size: clamp(22px, 3vw, 34px); letter-spacing: -.03em; line-height: 1.05; }
.m-step p { margin: 4px 0 0; grid-column: 2; max-width: 52ch; font-size: clamp(14px, 1.3vw, 17px); color: #3a3a3a; }
.m-step .stat { margin-top: 8px; display: flex; align-items: baseline; gap: 10px; color: var(--ink); }
.m-step .stat b { font-family: var(--head); font-weight: 900; font-size: clamp(30px, 4.4vw, 54px); letter-spacing: -.04em; line-height: 1; font-variant-numeric: tabular-nums; }
.m-step .stat small { white-space: nowrap; font-size: 10px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }

/* stage visuals */
.m-seq { display: grid; gap: 7px; width: min(560px, 92%); }
.m-seq .seq-row { grid-template-columns: 52px repeat(8, minmax(0, 1fr)); }
.m-seq .step { cursor: default; transition: background .15s ease; }
.m-flash { --ch: min(clamp(150px, calc(100svh - 430px), 380px), 69vw); height: var(--ch); width: calc(var(--ch) * 1.3333); perspective: 1000px; }
.m-flash .face .word { font-size: clamp(40px, 7vw, 84px); }
.m-flash .face .sub { font-size: clamp(16px, 2vw, 24px); }
.m-flash .flash-inner { transition: none; }
.m-book { width: min(900px, 100%); height: min(100%, 380px); grid-template-rows: 1fr 1fr; }
.m-book .book-text, .m-book .book-art { min-height: 0; }
.m-book .book-art { position: relative; min-height: 120px; }
.m-book .book-art svg { position: absolute; width: auto; height: min(70%, 190px); opacity: 0; transition: opacity .3s ease; }
.m-book .book-art svg.on { opacity: 1; }
.m-book .book-text { min-height: 0; padding: 14px; }
.m-book .l1 { font-size: clamp(22px, 4vw, 48px); }
.m-book .l2 { font-size: clamp(15px, 1.8vw, 22px); }

/* static (reduced motion) */
.method.static .method-runway { height: auto; }
.method.static .method-stick { position: static; height: auto; }
.method.static .m-stage { min-height: 260px; }
.method.static .m-steps { gap: 20px; }
.method.static .m-step { grid-area: auto; opacity: 1; }
@media (prefers-reduced-motion: reduce) { .m-step { transition: none; } .m-book .book-art svg { transition: none; } }
@media (max-height: 560px) { .m-head .label { display: none; } .m-step p { display: none; } }

/* ---------- HEAR IT PAGES ---------- */
.hear-group { font-family: var(--head); font-weight: 800; font-size: clamp(22px, 3vw, 34px); letter-spacing: -.03em; margin: 28px 0 0; border-bottom: 1px solid var(--ink); padding-bottom: 8px; }
.hear-group:first-of-type { margin-top: 0; }
.hear-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 210px), 1fr)); gap: 14px; margin-top: 14px; }
.hear-card { background: var(--paper-2); border: 2px solid var(--ink); border-radius: 16px; padding: 16px; display: grid; gap: 2px; align-content: start; }
.hear-card .hc-kr { margin: 0; font-family: var(--head); font-weight: 900; font-size: clamp(26px, 3.4vw, 38px); letter-spacing: -.03em; line-height: 1.05; overflow-wrap: anywhere; }
.hear-card .hc-fr { margin: 4px 0 0; font-size: 17px; font-weight: 600; }
.hear-card .hc-en { margin: 0; font-size: 14px; color: var(--gray); }
.hc-btns { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.play { font: inherit; font-size: 13px; font-weight: 700; padding: 9px 12px; border: 2px solid var(--ink); border-radius: 10px; background: var(--ink); color: var(--paper); cursor: pointer; }
.play.alt { background: transparent; color: var(--ink); }
.play.playing { background: var(--water-deep); border-color: var(--water-deep); color: var(--ink); }
.play.soon { opacity: .45; }
.hear-toast { position: sticky; bottom: 14px; margin: 18px 0 0; min-height: 1.5em; text-align: center; font-weight: 600; font-size: 14px; }
@media (prefers-reduced-motion: reduce) { .hear-card { scroll-behavior: auto; } }

/* ---------- UNLOCK PANEL ---------- */
.u-in { font: inherit; font-size: 16px; padding: 13px 14px; border: 2px solid var(--ink); border-radius: 12px; background: #fff; color: var(--ink); width: 100%; min-width: 0; }
#u-code { text-transform: uppercase; letter-spacing: .12em; font-weight: 700; }
.u-chk { display: flex; gap: 10px; align-items: center; font-size: 14px; }
.u-chk input { width: 20px; height: 20px; accent-color: var(--ink); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.hear-badge { margin: 0; padding: 10px var(--gut); background: var(--water); font-size: 11px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.play:disabled { cursor: not-allowed; }
.play.soon { opacity: .35; }
.play.locked { background: transparent; color: var(--ink); border-style: dashed; }
.play.locked.alt { opacity: .7; }