/* Blue Schoolbook x Porcelain x Gengo Signal
   A restrained finish over the original module compositions. */

:root {
  --ink: #173243;
  --ink-soft: #5c6f7b;
  --paper: #f3f8fa;
  --paper-2: #e8f1f4;
  --card: #ffffff;
  --line: #33596d;
  --matcha: #1d6478;
  --matcha-bg: #dceef3;
  --teal: #137f91;
  --teal-bg: #e4f7f7;
  --rose: #b84d69;
  --rose-bg: #fff0f4;
  --gold: #b68738;
  --kyoto-red: #b84d69;
  --sakura: #e9a8b8;
  --sakura-2: #f9e5eb;

  --signal-navy: #102e40;
  --signal-blue: #2f829a;
  --signal-cyan: #68c9c8;
  --signal-coral: #d86b81;
  --signal-lilac: #8170ad;
  --signal-ice: #e9f4f7;
  --signal-rule: rgba(36, 78, 99, .34);
  --signal-grid: radial-gradient(circle, rgba(35, 75, 96, .065) 1px, transparent 1px);
  --signal-shadow: 0 18px 46px rgba(30, 65, 82, .13);
  --i18n-guides: "[GUIDES]";
  --i18n-catalogue: "[CATALOGUE]";
  --i18n-web-module: "[WEB MODULE]";
  --i18n-your-turn: "✦ YOUR TURN";
}

html { scroll-behavior: auto; }
body { overflow-x: hidden; }

/* Support-language fonts; Japanese study text keeps the Noto JP stack. */
html[lang="zh-Hans"] { --f-body: "Microsoft YaHei UI", "Noto Sans CJK SC", system-ui, sans-serif; --f-mono: "Microsoft YaHei UI", "Noto Sans CJK SC", monospace; }
html[lang="zh-Hant"] { --f-body: "Microsoft JhengHei UI", "Noto Sans CJK TC", system-ui, sans-serif; --f-mono: "Microsoft JhengHei UI", "Noto Sans CJK TC", monospace; }
html[lang="ko"] { --f-body: "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif; --f-mono: "Malgun Gothic", "Noto Sans KR", monospace; }
html[lang="th"] { --f-body: "Leelawadee UI", "Noto Sans Thai", system-ui, sans-serif; --f-mono: "Leelawadee UI", "Noto Sans Thai", monospace; --f-serif-jp: "Leelawadee UI", "Noto Serif Thai", "Noto Serif JP", serif; }
html[lang="hi"] { --f-body: "Nirmala UI", "Noto Sans Devanagari", system-ui, sans-serif; --f-mono: "Nirmala UI", "Noto Sans Devanagari", monospace; --f-serif-jp: "Nirmala UI", "Noto Serif Devanagari", "Noto Serif JP", serif; }

.gengo-language-picker {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-inline-start: auto;
  color: var(--ink-soft);
  font-family: var(--f-body);
  font-size: .72rem;
  min-width: 0;
}
.gengo-language-picker select {
  width: clamp(174px, 18vw, 212px);
  max-width: min(212px, 100%);
  min-height: 44px;
  padding: 9px 34px 9px 24px;
  appearance: none;
  border: 0;
  border-radius: 12px;
  color: var(--signal-navy);
  background: url("../assets/generated/approved/gengo-language-picker-porcelain-v1.webp") center / 100% 100% no-repeat;
  font: inherit;
  font-weight: 700;
  text-overflow: ellipsis;
  cursor: pointer;
  filter: drop-shadow(3px 4px 0 rgba(51,89,109,.1));
  transition: filter 160ms ease, translate 160ms ease;
}
.gengo-language-picker::after {
  position: absolute;
  right: 14px;
  bottom: 13px;
  color: #fffaf0;
  content: "⌄";
  font: 900 13px/1 var(--f-mono);
  text-shadow: 0 1px 2px rgba(16,46,64,.7);
  pointer-events: none;
}
.gengo-language-picker select:hover { filter: drop-shadow(4px 5px 0 rgba(51,89,109,.14)); translate: 0 -1px; }
body.signal-module .gengo-language-picker {
  display: flex;
  width: max-content;
  margin: 0 0 12px auto;
}

.signal-skip {
  position: fixed;
  z-index: 100;
  left: 14px;
  top: 10px;
  translate: 0 -180%;
  padding: 9px 13px;
  border: 2px solid var(--line);
  border-radius: 6px;
  color: var(--signal-navy);
  background: #fff;
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 700;
}
.signal-skip:focus { translate: 0; }

:where(a, button, input, [role="button"]):focus-visible {
  outline: 3px solid var(--signal-coral);
  outline-offset: 4px;
}

/* --------------------------------------------------------------------------
   Hub: the catalogue keeps the useful route, but returns to schoolbook paper.
   Artwork is atmosphere behind the page, never a content surface.
   -------------------------------------------------------------------------- */

body.signal-hub {
  --module-art: url("../assets/generated/approved/gengo-porcelain-portal-backdrop.png");
  --catalogue-atmosphere: url("../assets/generated/approved/gengo-everyday-signal-backdrop.png");
  position: relative;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(255,255,255,.28), rgba(255,255,255,.28)),
    var(--signal-grid),
    linear-gradient(145deg, #e8f2f5 0%, #f8fbfc 48%, #e4eef2 100%);
  background-size: auto, 22px 22px, auto;
}
.signal-shell { position: relative; z-index: 1; }
.signal-wrap { width: min(calc(100% - 40px), 1180px); margin-inline: auto; }

.signal-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  border-bottom: 2px solid var(--signal-rule);
}
.signal-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  border: 0;
  color: var(--signal-navy);
  font-family: var(--f-serif-jp);
  font-size: 1.05rem;
  font-weight: 900;
  text-decoration: none;
}
.signal-brand:hover { color: var(--signal-blue); background: transparent; }
.signal-brand__mark {
  display: grid;
  place-items: center;
  width: 30px;
  aspect-ratio: 1;
  color: #fff;
  background: var(--signal-blue);
  clip-path: polygon(50% 0, 64% 35%, 100% 50%, 64% 65%, 50% 100%, 36% 65%, 0 50%, 36% 35%);
  font-family: var(--f-mono);
  font-size: 7px;
  font-weight: 900;
}
.signal-nav__links {
  display: flex;
  gap: 22px;
  margin-inline-start: clamp(28px, 4vw, 52px);
}
.signal-nav__links a {
  border: 0;
  color: var(--ink-soft);
  background: transparent;
  font-family: var(--f-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .11em;
  text-decoration: none;
  text-transform: uppercase;
}
.signal-nav__links a:hover { color: var(--signal-blue); background: transparent; }

.signal-hero {
  display: grid;
  grid-template-columns: minmax(0, .96fr) minmax(500px, 1.04fr);
  align-items: center;
  gap: clamp(32px, 4.5vw, 64px);
  min-height: 650px;
  padding-block: clamp(64px, 9vw, 112px);
}
.signal-kicker {
  margin: 0 0 12px;
  color: var(--signal-coral);
  font-family: var(--f-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
}
.signal-hero h1,
.route-intro h2,
.route-chapter h2,
.signal-outro h2 {
  color: var(--signal-navy);
  font-family: var(--f-serif-jp);
  font-weight: 900;
  letter-spacing: -.04em;
  line-height: 1.02;
  text-wrap: balance;
}
.signal-hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(3.35rem, 7vw, 6.6rem);
}
.signal-hero h1 em { color: var(--signal-blue); font-style: normal; }
.signal-hero__lede {
  max-width: 57ch;
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  line-height: 1.75;
}
.signal-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.signal-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 2px solid var(--line);
  border-radius: 7px;
  color: #fff;
  background: var(--signal-blue);
  box-shadow: 4px 4px 0 rgba(37, 78, 98, .18);
  font-family: var(--f-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .07em;
  text-decoration: none;
  text-transform: uppercase;
  transition: translate .16s ease, box-shadow .16s ease;
}
.signal-button:hover { color: #fff; background: #236f86; translate: -1px -1px; box-shadow: 6px 6px 0 rgba(37,78,98,.16); }
.signal-button--quiet { color: var(--signal-navy); background: rgba(255,255,255,.78); box-shadow: none; }
.signal-button--quiet:hover { color: var(--signal-navy); background: #fff; }

.guide-pair {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 24px 14px 14px;
  border: 2px solid var(--line);
  border-radius: 16px;
  background: rgba(249,253,254,.9);
  background-image: var(--signal-grid);
  background-size: 20px 20px;
  box-shadow: var(--signal-shadow), inset 0 1px #fff;
  overflow: hidden;
}
.guide-pair::before {
  content: var(--i18n-guides);
  position: absolute;
  z-index: 3;
  top: 6px;
  right: 15px;
  padding: 2px 9px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: #fff;
  background: var(--signal-blue);
  font-family: var(--f-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .08em;
}
.guide-pair::after {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  background-image: var(--module-art, none);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  filter: saturate(.78) contrast(.95);
  opacity: .14;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(ellipse 94% 92% at 50% 50%, #000 52%, rgba(0,0,0,.72) 72%, transparent 100%);
  mask-image: radial-gradient(ellipse 94% 92% at 50% 50%, #000 52%, rgba(0,0,0,.72) 72%, transparent 100%);
}
.sprite-guide {
  position: relative;
  z-index: 1;
  min-width: 0;
  padding: 12px 8px 14px;
  border: 1.5px solid rgba(51,89,109,.42);
  border-radius: 10px;
  color: var(--ink);
  background: rgba(255,255,255,.88);
  text-align: center;
  overflow: hidden;
}
.sprite-guide__button {
  position: relative;
  display: grid;
  place-items: center;
  width: min(100%, 190px);
  margin-inline: auto;
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  cursor: pointer;
}
.sprite-guide__halo {
  position: absolute;
  inset: 14%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(104,201,200,.28), transparent 68%);
  filter: blur(8px);
  animation: signal-breathe 5.5s ease-in-out infinite;
}
.sprite-guide--marina .sprite-guide__halo { background: radial-gradient(circle, rgba(216,107,129,.2), transparent 68%); animation-delay: -2.7s; }
.sprite-guide--selene .sprite-guide__halo { background: radial-gradient(circle, rgba(222,184,83,.24), rgba(50,90,133,.08) 48%, transparent 70%); animation-delay: -4.1s; }
.sprite-window {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  aspect-ratio: 1;
  overflow: visible;
  isolation: isolate;
}
.sprite-scale-layer,
.sprite-motion,
.sprite-film {
  position: absolute;
  inset: 0;
  display: block;
  pointer-events: none;
}
.sprite-scale-layer {
  transform: scale(var(--sprite-scale, 1));
  transform-origin: var(--sprite-origin, 50% 97%);
  transition: none;
}
.sprite-motion {
  transform-origin: 50% 96%;
}
.sprite-film {
  background-repeat: no-repeat;
  background-size: 400% 400%;
  background-position: 0 0;
  image-rendering: pixelated;
  opacity: 0;
  transition: none;
  will-change: opacity;
}
.sprite-guide__role {
  display: block;
  margin-top: 1px;
  color: var(--signal-blue);
  font-family: var(--f-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.sprite-guide--marina .sprite-guide__role { color: var(--signal-coral); }
.sprite-guide--selene .sprite-guide__role { color: #8b681d; }
.sprite-guide strong { display: block; margin-top: 3px; color: var(--signal-navy); font-family: var(--f-serif-jp); }
.sprite-guide small { display: block; min-height: 34px; margin-top: 3px; color: var(--ink-soft); font-size: .69rem; line-height: 1.45; }

.route-intro {
  display: none;
  grid-template-columns: .82fr 1.18fr;
  align-items: end;
  gap: clamp(30px, 7vw, 86px);
  padding: 40px 0 24px;
  border-top: 2px solid var(--signal-rule);
}
.route-intro h2 { margin: 0; font-size: clamp(2.15rem, 4.8vw, 4.2rem); }
.route-intro p { max-width: 58ch; margin: 0; color: var(--ink-soft); line-height: 1.8; }
.route-map {
  display: none;
  grid-template-columns: repeat(4, 1fr);
  margin: 18px 0 52px;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}
.route-map a {
  padding: 15px 16px;
  border: 0;
  border-right: 1px solid var(--signal-rule);
  color: var(--signal-navy);
  background: transparent;
  font-family: var(--f-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .08em;
  text-decoration: none;
  text-transform: uppercase;
}
.route-map a:last-child { border-right: 0; }
.route-map a:hover { color: #fff; background: var(--signal-blue); }

.catalogue-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 30px 20px 20px;
  border: 2px solid var(--line);
  border-radius: 14px;
  background: rgba(251,254,255,.9);
  box-shadow: 7px 7px 0 rgba(51,89,109,.1);
  overflow: hidden;
}
.catalogue-grid::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  background-image: var(--catalogue-atmosphere, none);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  opacity: .14;
  pointer-events: none;
}
.catalogue-grid::after {
  content: var(--i18n-catalogue);
  position: absolute;
  z-index: 4;
  top: 7px;
  right: 18px;
  padding: 2px 9px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: #fff;
  background: var(--signal-blue);
  font-family: var(--f-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .08em;
  pointer-events: none;
}
.catalogue-grid .route-chapter,
.catalogue-grid .lesson-shelf { display: contents; }
.catalogue-grid .route-chapter::before { display: none; }
.catalogue-grid .route-chapter__copy { display: none; }
.catalogue-grid .signal-outro,
.catalogue-grid .signal-footer { grid-column: 1 / -1; }

.route-chapter {
  --chapter-accent: var(--signal-blue);
  position: relative;
  display: grid;
  grid-template-columns: minmax(220px,.72fr) minmax(0,1.28fr);
  gap: clamp(28px, 5vw, 62px);
  margin: 0 0 28px;
  padding: clamp(30px, 4.5vw, 54px);
  border: 2px solid var(--line);
  border-left: 8px solid var(--chapter-accent);
  border-radius: 14px;
  background: rgba(251,254,255,.94);
  background-image: var(--signal-grid);
  background-size: 22px 22px;
  box-shadow: 8px 8px 0 rgba(51,89,109,.1);
  overflow: visible;
}
.route-chapter::before {
  content: var(--i18n-catalogue);
  position: absolute;
  top: -9px;
  right: 18px;
  padding: 2px 9px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: #fff;
  background: var(--chapter-accent);
  font-family: var(--f-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .08em;
}
.route-chapter::after {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  border-radius: 12px;
  background-image: var(--chapter-atmosphere, none);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  opacity: var(--chapter-atmosphere-opacity, 0);
  pointer-events: none;
}
.route-chapter > * { position: relative; z-index: 1; }
.route-chapter--say { --chapter-accent: var(--signal-coral); }
.route-chapter--daily { --chapter-accent: var(--signal-cyan); }
.route-chapter--memory { --chapter-accent: var(--signal-lilac); }
.route-chapter__art { display: none; }
.route-chapter__copy h2 { margin: 0; font-size: clamp(2rem, 3.8vw, 3.6rem); }
.route-chapter__copy > p:not(.signal-kicker) { color: var(--ink-soft); line-height: 1.7; }
.route-chapter__promise {
  display: inline-flex;
  margin-top: 8px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--signal-navy);
  background: var(--signal-ice);
  font-family: var(--f-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
}
.lesson-shelf { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
.lesson-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 164px;
  padding: 22px 14px 12px;
  border: 1.5px solid var(--line);
  border-radius: 9px;
  color: var(--ink);
  background: rgba(255,255,255,.96);
  box-shadow: 4px 4px 0 rgba(51,89,109,.1);
  text-decoration: none;
  overflow: hidden;
  transition: translate .16s ease, box-shadow .16s ease;
}
.lesson-card::before {
  content: attr(data-category);
  position: absolute;
  z-index: 2;
  top: -1px;
  right: 10px;
  padding: 2px 9px 3px;
  border: 1px solid var(--line);
  border-top: 0;
  border-radius: 0 0 4px 4px;
  color: #fff;
  background: var(--chapter-accent, var(--signal-blue));
  font-family: var(--f-mono);
  font-size: 7px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
}
.lesson-card::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 10px;
  width: 7px;
  height: 7px;
  background: var(--chapter-accent);
  box-shadow: 9px 0 rgba(51,89,109,.18), 0 9px rgba(51,89,109,.18);
}
.lesson-card:hover { color: var(--ink); background: #fff; translate: -2px -2px; box-shadow: 7px 7px 0 rgba(51,89,109,.12); }
.lesson-card__glyph { color: var(--signal-lilac); font-family: var(--f-serif-jp); font-size: 2.1rem; font-weight: 900; line-height: 1; }
.lesson-card__kind { margin-top: 7px; color: var(--signal-blue); font-family: var(--f-mono); font-size: 7px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.lesson-card h3 { margin: 4px 0 5px; color: var(--signal-navy); font-family: var(--f-serif-jp); font-size: 1rem; line-height: 1.18; }
.lesson-card p { display: -webkit-box; margin: 0; color: var(--ink-soft); font-size: .74rem; line-height: 1.42; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.lesson-card__action { margin-top: auto; padding-top: 9px; color: var(--signal-coral); font-family: var(--f-mono); font-size: 7px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; }

.signal-outro {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 26px;
  margin: 54px 0 20px;
  padding: 28px;
  border: 2px solid var(--line);
  border-left: 8px solid var(--signal-coral);
  border-radius: 10px;
  background: #fff;
}
.signal-outro h2 { margin: 0; font-size: clamp(1.8rem,3.5vw,3rem); }
.signal-outro p { margin: 7px 0 0; color: var(--ink-soft); }
.signal-footer { padding: 20px 0 38px; color: var(--ink-soft); font-family: var(--f-mono); font-size: 9px; letter-spacing: .07em; }

.signal-spark {
  position: fixed;
  z-index: 1;
  width: 4px;
  height: 4px;
  pointer-events: none;
  background: var(--signal-cyan);
  box-shadow: 0 0 10px rgba(47,130,154,.42);
  animation: signal-drift var(--spark-duration, 9s) ease-in-out infinite;
  animation-delay: var(--spark-delay, 0s);
}

/* --------------------------------------------------------------------------
   Modules: preserve the original lesson composition and interaction hierarchy.
   -------------------------------------------------------------------------- */

body.signal-module {
  position: relative;
  min-height: 100vh;
  margin: 0;
  padding: 30px 16px 56px;
  color: var(--ink);
  background:
    linear-gradient(rgba(255,255,255,.3), rgba(255,255,255,.3)),
    var(--signal-grid),
    linear-gradient(145deg, #dcebf0, #f7fbfc 48%, #e3eef2);
  background-size: auto, 22px 22px, auto;
}
body.signal-module::before {
  content: "";
  position: fixed;
  z-index: 0;
  inset: 0;
  background-image: var(--module-art, none);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  opacity: var(--module-art-opacity, 0);
  pointer-events: none;
  filter: saturate(.82) contrast(.94);
}
body.signal-module::after {
  content: "";
  position: fixed;
  z-index: 0;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, transparent 0 8%, rgba(255,255,255,.34) 8% 8.2%, transparent 8.2% 100%);
}
body.signal-module .wm {
  position: relative;
  z-index: 2;
  width: 100%;
  border: 2px solid var(--line);
  border-radius: 16px;
  color: var(--ink);
  background: rgba(252,254,255,.94);
  background-image: var(--signal-grid);
  background-size: 20px 20px;
  box-shadow: var(--signal-shadow), 7px 7px 0 rgba(51,89,109,.12);
}
body.signal-module .wm::before {
  content: var(--i18n-web-module);
  position: absolute;
  top: -9px;
  right: 14px;
  padding: 2px 9px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: #fff;
  background: var(--signal-blue);
  font-family: var(--f-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .08em;
}
body.signal-module .wm__eyebrow { color: var(--signal-coral); }
body.signal-module .wm h1 { color: var(--signal-navy); }
body.signal-module .wm__intro { color: var(--ink-soft); }
body.signal-module .wm__top { border-bottom-color: var(--signal-rule); }

body.signal-module :where(.card, .turn, .game, .quiz, .today, .match, .haiku-575, .reward, .secret, .sun-note, .man-note, .recap) {
  border-color: var(--line);
  border-radius: 9px;
  background-color: rgba(255,255,255,.94);
  box-shadow: 3px 3px 0 rgba(51,89,109,.08);
}
body.signal-module :where(.num, .c, .sky, .step, .iro, .rung, .price, .hana, .cando li) {
  border-color: var(--line);
  border-radius: 8px;
  background-color: #fff;
  box-shadow: 2px 2px 0 rgba(51,89,109,.08);
}
body.signal-module :where(.num, .c, .sky, .step, .iro, .rung, .price, .hana, .cando li, .secret, .wild, #glyphbox)[role="button"] {
  transition: translate .14s ease, box-shadow .14s ease;
}
body.signal-module :where(.num, .c, .sky, .step, .iro, .rung, .price, .hana, .cando li, .secret, .wild, #glyphbox)[role="button"]:hover {
  translate: -1px -1px;
  box-shadow: 4px 4px 0 rgba(51,89,109,.1);
}
body.signal-module .gengo-bubble { box-shadow: 4px 4px 0 rgba(51,89,109,.09); }
body.signal-module .cta-card {
  border-color: var(--line);
  border-radius: 10px;
  color: var(--ink);
  background: linear-gradient(135deg, #e8f5f7, #fff 72%);
  box-shadow: 4px 4px 0 rgba(51,89,109,.09);
}
body.signal-module .cta-card :where(p, small) { color: var(--ink-soft); }
body.signal-module .cta,
body.signal-module button {
  min-height: 42px;
}
body.signal-module .petal { display: none !important; }

/* Complete-thought audio: one useful sentence, then a quiet echo turn. */
.sentence-model {
  position: relative;
  margin-top: 16px;
  padding: 15px 15px 13px;
  border: 2px solid var(--line);
  border-left: 7px solid var(--signal-cyan);
  border-radius: 9px;
  background: linear-gradient(135deg, rgba(233,244,247,.96), rgba(255,255,255,.98) 70%);
  box-shadow: 3px 3px 0 rgba(51,89,109,.08);
  overflow: hidden;
}
.sentence-model::after {
  content: "";
  position: absolute;
  top: 10px;
  right: 11px;
  width: 6px;
  height: 6px;
  background: var(--signal-coral);
  box-shadow: 9px 0 rgba(47,130,154,.25), 18px 0 rgba(47,130,154,.14);
}
.sentence-model__eyebrow {
  margin: 0 0 5px;
  color: var(--signal-blue);
  font-family: var(--f-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.sentence-model__jp {
  margin: 0;
  color: var(--signal-navy);
  font-family: var(--f-serif-jp);
  font-size: clamp(1.15rem, 4.8vw, 1.48rem);
  font-weight: 800;
  line-height: 1.45;
}
.sentence-model__reading,
.sentence-model__gloss {
  margin: 3px 0 0;
  color: var(--ink-soft);
  font-size: .78rem;
  line-height: 1.5;
}
.sentence-model__reading { font-family: var(--f-mono); font-size: .7rem; }
.sentence-model__button {
  width: 100%;
  margin-top: 11px;
  border: 2px solid var(--line);
  border-radius: 7px;
  color: #fff;
  background: linear-gradient(100deg, var(--signal-blue), var(--teal));
  box-shadow: 3px 3px 0 rgba(51,89,109,.15);
  font-family: var(--f-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  cursor: pointer;
}
.sentence-model__button:hover { filter: brightness(1.05); translate: -1px -1px; }
.sentence-echo {
  min-height: 1.35em;
  margin: 9px 0 0;
  color: var(--ink-soft);
  font-family: var(--f-mono);
  font-size: 9px;
  line-height: 1.55;
  letter-spacing: .025em;
}
.sentence-model.is-playing { border-left-color: var(--signal-coral); }
.sentence-model.is-playing .sentence-model__button { background: linear-gradient(100deg, var(--signal-coral), var(--signal-lilac)); }
.sentence-model.echo-ready .sentence-echo,
.haiku-575.echo-ready .sentence-echo,
.reward.echo-ready .sentence-echo,
.line.echo-ready + .sentence-echo,
.turn.echo-ready .sentence-echo {
  color: var(--signal-coral);
  font-weight: 700;
  animation: signal-echo-pulse .72s ease both;
}

@keyframes signal-echo-pulse {
  0% { opacity: .35; translate: 0 4px; }
  100% { opacity: 1; translate: 0 0; }
}

/* The corrective layer deliberately removes the injected overhaul furniture. */
.signal-module-head,
.signal-cameo,
.signal-next { display: none !important; }

.spark-home-button {
  position: fixed;
  z-index: 9999;
  left: max(12px, env(safe-area-inset-left));
  bottom: max(12px, env(safe-area-inset-bottom));
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 2px solid var(--signal-rule);
  border-radius: 14px;
  background: rgba(255,255,255,.92);
  box-shadow: 4px 4px 0 rgba(51,89,109,.14), 0 10px 28px rgba(51,89,109,.12);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}
.spark-home-button img { width: 90%; height: 90%; object-fit: contain; }
.spark-home-button:hover,
.spark-home-button:focus-visible {
  transform: translateY(-2px);
  border-color: var(--signal-coral);
  box-shadow: 5px 6px 0 rgba(51,89,109,.16), 0 14px 30px rgba(51,89,109,.15);
  outline: none;
}

@keyframes signal-breathe { 0%,100% { opacity: .5; scale: .95; } 50% { opacity: .9; scale: 1.03; } }
@keyframes signal-drift { 0%,100% { opacity: .18; translate: 0 0; } 50% { opacity: .7; translate: 0 -14px; } }

@media (max-width: 980px) {
  .signal-hero { grid-template-columns: 1fr; min-height: auto; }
  .guide-pair { width: min(720px, 100%); justify-self: center; }
  .route-intro { grid-template-columns: 1fr; }
  .route-map { grid-template-columns: repeat(2, 1fr); }
  .route-map a:nth-child(2) { border-right: 0; }
  .route-map a:nth-child(-n+2) { border-bottom: 1px solid var(--signal-rule); }
  .route-chapter { grid-template-columns: 1fr; }
  .catalogue-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .signal-wrap { width: min(calc(100% - 24px), 1180px); }
  .signal-nav { flex-wrap: wrap; gap: 8px 12px; padding-block: 10px; }
  .signal-brand { flex: 1 1 auto; min-width: 0; }
  body.signal-hub .gengo-language-picker { order: 3; flex: 0 0 100%; width: 100%; max-width: 100%; box-sizing: border-box; justify-content: flex-end; margin: 0 0 4px; }
  .gengo-language-picker select { max-width: min(180px, 70vw); }
  body.signal-module .gengo-language-picker { max-width: 100%; }
  .signal-nav__links { display: none; }
  .signal-hero { padding-block: 54px 64px; }
  .signal-hero h1 { font-size: clamp(3.05rem, 15vw, 4.8rem); }
  .signal-actions { display: grid; }
  .signal-button { width: 100%; }
  .guide-pair { grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 24px 9px 9px; gap: 8px; }
  .sprite-guide--selene { grid-column: 1 / -1; width: calc((100% - 8px) / 2); justify-self: center; }
  .sprite-guide { padding-inline: 4px; }
  .sprite-guide small { min-height: 50px; }
  .route-map { margin-bottom: 34px; }
  .catalogue-grid { grid-template-columns: 1fr; gap: 9px; padding: 30px 10px 10px; }
  .route-chapter { padding: 32px 18px 28px 24px; border-left-width: 6px; box-shadow: 4px 4px 0 rgba(51,89,109,.1); }
  .lesson-shelf { grid-template-columns: 1fr; }
  .lesson-card { min-height: 146px; }
  .signal-outro { grid-template-columns: 1fr; }
  body.signal-module { padding: 14px 8px 38px; }
  body.signal-module .wm { border-radius: 12px; box-shadow: 4px 4px 0 rgba(51,89,109,.1); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .signal-spark { display: none; }
  .sprite-guide__halo { opacity: .45; }
  .sprite-scale-layer,
  .sprite-motion,
  .sprite-film { transition: none !important; }
}