/* ------------------------------------------------------------------
   Yobimi Group — landing page
   Palette: teal ink on cool paper, coral as the single loud note.
   Type:    Bricolage Grotesque (display) · Figtree (body) · JetBrains Mono (utility)
------------------------------------------------------------------- */

:root {
  --paper: #f5f8f8;
  --paper-2: #eaf0f0;
  --ink: #0f2b2a;
  --ink-2: #3f5857;
  --ink-3: #6f8584;
  --line: #d3dedd;
  --teal: #0e7c7b;
  --teal-deep: #0a5c5b;
  --teal-soft: #d6ecea;
  --coral: #ff6b4a;
  --coral-ink: #c2401f;
  --surface: #ffffff;
  --shadow: 0 1px 2px rgba(15, 43, 42, .06), 0 12px 32px -16px rgba(15, 43, 42, .25);
  --band-bg: #0f2b2a;
  --band-fg: #f5f8f8;
  --band-muted: #a9bdbc;
  --band-accent: #6fd0cd;
  --band-line: #244544;

  --font-display: "Bricolage Grotesque", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Figtree", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.625rem;
  --step-3: 2.25rem;
  --step-4: clamp(2.75rem, 2rem + 3.5vw, 4.75rem);

  --gutter: clamp(16px, 4vw, 48px);
  --max: 1180px;
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #0d1b1b;
    --paper-2: #122423;
    --ink: #e8f0ef;
    --ink-2: #b4c6c5;
    --ink-3: #7f9695;
    --line: #22403f;
    --teal: #3fb5b2;
    --teal-deep: #6fd0cd;
    --teal-soft: #163a39;
    --coral: #ff7d5f;
    --coral-ink: #ffa48e;
    --surface: #132928;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px -16px rgba(0, 0, 0, .6);
    --band-bg: #132928;
    --band-fg: #e8f0ef;
    --band-muted: #9fb5b4;
    --band-accent: #3fb5b2;
    --band-line: #2a4a49;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #0d1b1b;
  --paper-2: #122423;
  --ink: #e8f0ef;
  --ink-2: #b4c6c5;
  --ink-3: #7f9695;
  --line: #22403f;
  --teal: #3fb5b2;
  --teal-deep: #6fd0cd;
  --teal-soft: #163a39;
  --coral: #ff7d5f;
  --coral-ink: #ffa48e;
  --surface: #132928;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px -16px rgba(0, 0, 0, .6);
  --band-bg: #132928;
  --band-fg: #e8f0ef;
  --band-muted: #9fb5b4;
  --band-accent: #3fb5b2;
  --band-line: #2a4a49;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--teal-deep); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--coral); outline-offset: 3px; border-radius: 4px; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin: 0;
}
h1 { font-size: var(--step-4); font-weight: 700; letter-spacing: -0.035em; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); }
p { margin: 0; }

.wrap {
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  background: var(--teal);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: var(--step--1);
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--teal-deep); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); }
.btn svg { width: 18px; height: 18px; flex: none; }

/* --------------------------------------------------------------- nav */
.nav {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 32px; height: 32px;
  display: block;
  object-fit: contain;
  flex: none;
}
.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  display: block;
  padding: 8px 12px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink-2);
  font-size: var(--step--1);
  font-weight: 500;
}
.nav-links a:hover { background: var(--paper-2); color: var(--ink); }
.nav-cta { display: none; }
@media (min-width: 720px) { .nav-cta { display: inline-flex; padding: 9px 16px; } }
@media (max-width: 560px) { .nav-links { display: none; } }

/* --------------------------------------------------------------- hero */
.hero {
  padding-block: clamp(48px, 8vw, 104px) clamp(40px, 6vw, 80px);
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } }

.hero-copy { display: grid; gap: 24px; }
.ipa {
  font-family: var(--font-mono);
  color: var(--ink-3);
  font-size: var(--step--1);
  letter-spacing: 0.02em;
}
.ipa b { color: var(--teal); font-weight: 500; }
.hero h1 em {
  font-style: normal;
  color: var(--teal);
  position: relative;
  white-space: nowrap;
}
.hero h1 em::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0.06em;
  height: 0.12em;
  background: var(--coral);
  border-radius: 2px;
  opacity: .9;
}
.lede {
  font-size: var(--step-1);
  color: var(--ink-2);
  max-width: 34ch;
  line-height: 1.5;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-3);
  font-size: var(--step--1);
}
.avatars { display: flex; }
.avatars span {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 2px solid var(--paper);
  margin-left: -8px;
  background: var(--teal-soft);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--teal-deep);
}
.avatars span:first-child { margin-left: 0; }

/* the audio "shelf": phone with a waveform + stacked app tiles */
.hero-visual {
  position: relative;
  min-height: 420px;
  display: grid;
  align-items: center;
  justify-items: end;
}
.phone {
  width: min(260px, 72%);
  aspect-ratio: 9 / 18.5;
  max-width: 100%;
  background: var(--ink);
  border-radius: 38px;
  padding: 12px;
  box-shadow: var(--shadow), 0 40px 80px -30px rgba(15, 43, 42, .5);
  position: relative;
  z-index: 2;
}
.screen {
  background: var(--surface);
  border-radius: 28px;
  height: 100%;
  padding: 26px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow: hidden;
  color: var(--ink);
}
.screen-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
}
.screen-tag {
  background: var(--teal-soft);
  color: var(--teal-deep);
  padding: 3px 8px;
  border-radius: 999px;
}
.lesson-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.lesson-sub { font-size: 12px; color: var(--ink-3); }
.wave {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 56px;
  margin-top: auto;
}
.wave i {
  flex: 1;
  background: var(--teal);
  border-radius: 2px;
  height: var(--h, 30%);
  opacity: .9;
  transform-origin: center;
  animation: wave 1.6s ease-in-out infinite;
  animation-delay: var(--d, 0s);
}
.wave i:nth-child(n+22) { background: var(--line); animation: none; }
@keyframes wave {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(.45); }
}
.transcript {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-2);
}
.transcript mark {
  background: var(--coral);
  color: #fff;
  border-radius: 3px;
  padding: 0 3px;
}
.player {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
}
.play {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  display: grid;
  place-items: center;
  flex: none;
}
.play svg { width: 16px; height: 16px; margin-left: 2px; }
.progress {
  flex: 1;
  height: 3px;
  background: var(--line);
  border-radius: 2px;
  position: relative;
}
.progress::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 38%;
  background: var(--teal);
  border-radius: 2px;
}

.float {
  position: absolute;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  z-index: 3;
  animation: drift 6s ease-in-out infinite;
}
.float small { display: block; font-weight: 400; color: var(--ink-3); font-size: 11px; }
.float .app-icon { width: 34px; height: 34px; border-radius: 9px; }
.float { max-width: 210px; }
.float-a { top: 10%; left: 0; animation-delay: 0s; }
.float-b { top: 45%; left: 4px; animation-delay: -2s; }
.float-c { bottom: 10%; left: 0; animation-delay: -4s; }
@keyframes drift {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@media (max-width: 860px) {
  .hero-visual { justify-items: center; }
  .float { display: none; }
}
@media (max-width: 480px) {
  .hero-visual { min-height: 0; padding-block: 24px; }
}

/* --------------------------------------------------------------- stats */
.stats {
  border-block: 1px solid var(--line);
  background: var(--paper-2);
}
.stats .wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stat {
  padding: 26px 20px;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 4px;
}
.stat:first-child { border-left: 0; padding-left: 0; }
.stat b {
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.stat b sup { font-size: .45em; color: var(--coral-ink); vertical-align: top; top: .3em; position: relative; }
.stat span { color: var(--ink-3); font-size: var(--step--1); }
@media (max-width: 760px) {
  .stats .wrap { grid-template-columns: 1fr 1fr; }
  .stat { border-left: 0; padding-left: 0; }
  .stat:nth-child(even) { border-left: 1px solid var(--line); padding-left: 20px; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
}

/* --------------------------------------------------------------- sections */
.section { padding-block: clamp(56px, 8vw, 112px); }
.section-head {
  display: grid;
  gap: 14px;
  max-width: 62ch;
  margin-bottom: clamp(32px, 4vw, 56px);
}
.section-head p { color: var(--ink-2); font-size: var(--step-1); line-height: 1.5; }

/* apps */
.app-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
@media (max-width: 900px) { .app-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 540px) { .app-grid { grid-template-columns: 1fr; } }

.app {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 16px;
  text-decoration: none;
  color: inherit;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
  position: relative;
}
.app:hover { transform: translateY(-3px); border-color: var(--teal); box-shadow: var(--shadow); }
.app-top { display: flex; align-items: center; gap: 14px; }
.app-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  flex: none;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--tile, var(--teal));
}
.app-icon svg { width: 28px; height: 28px; }
.app h3 { font-size: 1.125rem; }
.app-cat {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.app p { color: var(--ink-2); font-size: var(--step--1); line-height: 1.55; }
.app-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-3);
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}
.app-meta .rating { display: inline-flex; align-items: center; gap: 5px; color: var(--ink); }
.app-meta .rating svg { width: 13px; height: 13px; color: var(--coral); }
.app-meta .go { color: var(--teal); font-weight: 600; }
.app.featured { grid-column: span 2; grid-template-columns: 1.1fr 1fr; grid-template-rows: none; }
.app.featured .featured-side {
  background: var(--teal-soft);
  border-radius: 10px;
  padding: 18px;
  display: grid;
  gap: 10px;
  align-content: start;
}
.app.featured .featured-side b { font-family: var(--font-display); font-size: 1rem; color: var(--teal-deep); }
.app.featured .featured-side ul { margin: 0; padding-left: 18px; font-size: var(--step--1); color: var(--ink-2); display: grid; gap: 4px; }
.app.featured .featured-main { display: grid; grid-template-rows: auto 1fr auto; gap: 16px; }
@media (max-width: 900px) { .app.featured { grid-column: span 2; } }
@media (max-width: 640px) { .app.featured { grid-template-columns: 1fr; } }
@media (max-width: 540px) { .app.featured { grid-column: span 1; } }

.badge-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; align-items: center; color: var(--ink-3); font-size: var(--step--1); }

/* method */
.method { background: var(--band-bg); color: var(--band-fg); }
.method .eyebrow { color: var(--band-accent); }
.method .eyebrow::before { background: var(--band-accent); }
.method h2 { color: var(--band-fg); }
.method .section-head p { color: var(--band-muted); }
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--band-line);
  border: 1px solid var(--band-line);
  border-radius: var(--radius);
  overflow: hidden;
}
@media (max-width: 760px) { .method-grid { grid-template-columns: 1fr; } }
.method-item {
  background: var(--band-bg);
  padding: 28px 26px;
  display: grid;
  gap: 12px;
  align-content: start;
}
.method-item .glyph {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--band-line);
  color: var(--band-accent);
}
.method-item .glyph svg { width: 22px; height: 22px; }
.method-item h3 { color: var(--band-fg); }
.method-item p { color: var(--band-muted); font-size: var(--step--1); }

/* story */
.story-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}
@media (max-width: 800px) { .story-grid { grid-template-columns: 1fr; } }
.story-copy { display: grid; gap: 18px; color: var(--ink-2); max-width: 58ch; }
.story-copy p { line-height: 1.65; }
.timeline { list-style: none; margin: 0; padding: 0; display: grid; }
.timeline li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  padding-block: 18px;
  border-top: 1px solid var(--line);
}
.timeline li:last-child { border-bottom: 1px solid var(--line); }
.timeline .year {
  font-family: var(--font-mono);
  color: var(--teal);
  font-size: var(--step--1);
  padding-top: 3px;
}
.timeline b { display: block; font-family: var(--font-display); font-weight: 600; font-size: var(--step-0); }
.timeline span { color: var(--ink-2); font-size: var(--step--1); }

/* contact */
.contact { padding-block: clamp(56px, 8vw, 112px); }
.contact-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: clamp(28px, 5vw, 56px);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  gap: clamp(28px, 4vw, 64px);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.contact-card::before {
  content: "";
  position: absolute;
  width: 420px; height: 420px;
  right: -160px; top: -200px;
  border-radius: 50%;
  background: radial-gradient(closest-side, var(--teal-soft), transparent);
  pointer-events: none;
}
@media (max-width: 800px) { .contact-card { grid-template-columns: 1fr; } }
.contact-card > * { position: relative; }
.contact-copy { display: grid; gap: 18px; }
.contact-copy p { color: var(--ink-2); max-width: 46ch; }
.contact-list { display: grid; gap: 12px; align-content: start; }
.contact-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--paper-2);
  border-radius: 12px;
}
.contact-row small {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 2px;
}
.contact-row code {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink);
  user-select: all;
}
.copy-btn {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-2);
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.copy-btn:hover { border-color: var(--ink); color: var(--ink); }
.copy-btn[data-done="1"] { border-color: var(--teal); color: var(--teal); }

/* footer */
.footer {
  border-top: 1px solid var(--line);
  padding-block: 28px;
  font-size: var(--step--1);
  color: var(--ink-3);
}
.footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
  align-items: center;
}
.footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 18px; }
.footer a { color: var(--ink-2); text-decoration: none; }
.footer a:hover { color: var(--ink); text-decoration: underline; }

/* --------------------------------------------------------------- legal pages */
.legal { padding-block: clamp(40px, 6vw, 80px) clamp(56px, 8vw, 112px); }
.legal-head {
  display: grid;
  gap: 14px;
  max-width: 62ch;
  padding-bottom: clamp(24px, 4vw, 40px);
  margin-bottom: clamp(24px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
}
.legal-head .meta {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-3);
}
.legal-grid {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}
@media (max-width: 800px) { .legal-grid { grid-template-columns: 1fr; } }
.toc {
  position: sticky;
  top: calc(64px + 24px + env(safe-area-inset-top, 0px));
  display: grid;
  gap: 2px;
  font-size: var(--step--1);
}
.toc .eyebrow { margin-bottom: 10px; }
.toc a {
  display: block;
  padding: 6px 10px;
  border-radius: 8px;
  color: var(--ink-2);
  text-decoration: none;
  line-height: 1.35;
}
.toc a:hover { background: var(--paper-2); color: var(--ink); }
@media (max-width: 800px) { .toc { position: static; } }
.legal-body { max-width: 72ch; display: grid; gap: 22px; color: var(--ink-2); }
.legal-body h2 {
  font-size: var(--step-2);
  color: var(--ink);
  padding-top: 18px;
  scroll-margin-top: calc(64px + 24px + env(safe-area-inset-top, 0px));
}
.legal-body h2:first-child { padding-top: 0; }
.legal-body h3 { font-size: var(--step-0); color: var(--ink); font-family: var(--font-body); font-weight: 600; }
.legal-body p { line-height: 1.65; }
.legal-body p .n {
  font-family: var(--font-mono);
  color: var(--teal);
  font-size: .85em;
  margin-right: 6px;
}
.legal-body ul, .legal-body ol { margin: 0; padding-left: 22px; display: grid; gap: 8px; line-height: 1.6; }
.legal-body address { font-style: normal; line-height: 1.6; }
.legal-body .callout {
  background: var(--teal-soft);
  border-radius: 12px;
  padding: 16px 18px;
  color: var(--ink);
  font-size: var(--step--1);
}
.legal-body code { font-family: var(--font-mono); font-size: .9em; user-select: all; }

/* real store icons */
.app-icon.has-img { background: var(--paper-2); overflow: hidden; }
.app-icon.has-img img { width: 100%; height: 100%; object-fit: cover; border-radius: inherit; display: block; }