/* Explain It Easy — "storybook" design system, matching the Android app. */
:root {
  --denim: #2B5CB8; --denim-deep: #0B2559; --denim-soft: #D9E5FF;
  --sky: #2FA3D9; --sky-soft: #D4EDF5; --paper: #F3F9FC; --white: #fff;
  --sun: #F5B83D; --sun-soft: #FFE7B0; --sun-deep: #8A5A00;
  --coral: #D2556A; --coral-soft: #FFD9DE;
  --meadow: #3E9B5C; --meadow-soft: #DDF3E3;
  --violet: #5B4CD6; --violet-soft: #E6E2FF;
  --orange: #D06A0A; --orange-soft: #FFE6CF;
  --ink: #14202B; --ink-soft: #4A5A68; --line: #DCE7EE;
  --kid: #2E9150; --teen: #1C89BD; --adult: #5B4CD6; --expert: #D06A0A;
  --radius: 26px; --radius-sm: 16px;
  --shadow: 0 18px 50px -20px rgba(11, 37, 89, .28);
  --shadow-sm: 0 6px 20px -10px rgba(11, 37, 89, .22);
  --font-display: "Nunito", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --max: 1160px;
}
.lang-ja {
  --font-display: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Noto Sans JP", sans-serif;
  --font-body: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
}

*, *::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: 400 17px/1.7 var(--font-body);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
.lang-ja body { font-size: 16px; line-height: 1.85; letter-spacing: .02em; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--denim); text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.18; margin: 0 0 .5em; letter-spacing: -.01em; text-wrap: balance; }
/* Keep a phrase together; lines break only between phrases (essential for Japanese). */
.ph { display: inline-block; }
.lang-ja h1, .lang-ja h2, .lang-ja h3 { line-height: 1.38; letter-spacing: .01em; line-break: strict; word-break: auto-phrase; }
.lang-ja h1 { font-size: clamp(2.1rem, 4.6vw, 3.6rem); }
.lang-ja h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); }
h1 { font-size: clamp(2.5rem, 5.6vw, 4.2rem); font-weight: 900; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); font-weight: 900; }
h3 { font-size: 1.3rem; font-weight: 800; }
p { margin: 0 0 1em; }
.container { width: min(var(--max), 100% - 40px); margin-inline: auto; }
.container.narrow { width: min(860px, 100% - 40px); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip-link:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--sky); outline-offset: 3px; border-radius: 8px; }
.eyebrow {
  display: inline-block; font: 800 .82rem/1 var(--font-display); letter-spacing: .12em; text-transform: uppercase;
  color: var(--denim); background: var(--denim-soft); padding: 8px 14px; border-radius: 999px; margin-bottom: 18px;
}
.lang-ja .eyebrow { letter-spacing: .08em; }
.lead { font-size: 1.15rem; color: var(--ink-soft); }
.label { font: 800 .78rem/1 var(--font-display); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 10px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; border-radius: 999px; font: 800 1rem/1 var(--font-display);
  padding: 16px 26px; text-decoration: none; transition: transform .2s cubic-bezier(.3,1.6,.6,1), box-shadow .2s, background .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: scale(.97); }
.btn-primary { color: #fff; background: linear-gradient(90deg, #2B5CB8, #4F7FE0 55%, #2FA3D9); box-shadow: var(--shadow-sm); }
.btn-ghost { color: var(--denim); background: #fff; border: 2px solid var(--denim-soft); }
.btn-sm { padding: 11px 18px; font-size: .92rem; }
.play-badge {
  display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: #fff;
  background: var(--ink); border-radius: 16px; padding: 11px 20px 11px 16px;
  box-shadow: var(--shadow-sm); transition: transform .2s cubic-bezier(.3,1.6,.6,1), box-shadow .2s;
}
.play-badge:hover { transform: translateY(-3px) rotate(-1deg); box-shadow: var(--shadow); }
.play-badge .play-text { display: flex; flex-direction: column; line-height: 1.15; }
.play-badge small { font: 700 .66rem/1.2 var(--font-body); letter-spacing: .08em; opacity: .8; }
.play-badge strong { font: 800 1.12rem/1.2 var(--font-display); }
.play-badge-sm { padding: 8px 16px 8px 12px; margin-top: 8px; }
.play-badge-sm strong { font-size: .95rem; }
.play-badge-light { background: #fff; color: var(--ink); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50; background: rgba(243, 249, 252, .82);
  backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent; transition: border-color .2s, box-shadow .2s;
}
.site-header.scrolled { border-color: var(--line); box-shadow: 0 6px 24px -18px rgba(11,37,89,.4); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font: 900 1.2rem/1 var(--font-display); }
.brand img { width: 40px; height: 40px; border-radius: 11px; box-shadow: var(--shadow-sm); }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a:not(.btn) { color: var(--ink); text-decoration: none; font: 700 .97rem/1 var(--font-display); }
.nav-links a:not(.btn):hover { color: var(--denim); }
.lang-switch { padding: 9px 14px; border-radius: 999px; background: #fff; border: 1.5px solid var(--line); }
.nav-toggle { display: none; background: none; border: 0; width: 44px; height: 44px; padding: 10px; cursor: pointer; }
.nav-toggle .bar { display: block; height: 2.5px; background: var(--ink); border-radius: 2px; margin: 6px 0; transition: transform .25s; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) { transform: translateY(4.25px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-4.25px) rotate(-45deg); }

.lang-banner {
  display: flex; gap: 14px; align-items: center; justify-content: center; flex-wrap: wrap;
  background: var(--sun-soft); color: var(--sun-deep); font: 700 .95rem/1.4 "Noto Sans JP", sans-serif; padding: 10px 48px 10px 16px; position: relative;
}
.lang-banner a { color: var(--ink); font-weight: 800; }
.lang-banner-close { position: absolute; right: 10px; top: 50%; translate: 0 -50%; background: none; border: 0; font-size: 1.4rem; cursor: pointer; color: var(--sun-deep); }

/* ---------- pencil strokes (echo the app icon) ---------- */
.strokes { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.strokes i { position: absolute; height: 14px; border-radius: 8px; opacity: .55; transform: rotate(-24deg); }
.strokes i:nth-child(1) { width: 260px; background: #8EC5FF; top: 12%; right: 4%; }
.strokes i:nth-child(2) { width: 200px; background: #FFD27A; top: 24%; right: 18%; }
.strokes i:nth-child(3) { width: 320px; background: #B9A6FF; bottom: 18%; right: -2%; }
.strokes i:nth-child(4) { width: 180px; background: #FFA6B4; bottom: 8%; left: 6%; }
.strokes i:nth-child(5) { width: 140px; background: #9EE3B4; top: 8%; left: 38%; }
.strokes i:nth-child(6) { width: 220px; background: #8EC5FF; bottom: 30%; left: -3%; }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; padding: 56px 0 90px; background: linear-gradient(135deg, #D4EDF5 0%, #EAF4FF 55%, #FFF4DC 100%); border-radius: 0 0 48px 48px; }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.08fr .92fr; gap: 40px; align-items: center; }
.hero h1 { margin-bottom: 20px; }
.hero .lead { max-width: 34em; font-size: 1.2rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin: 30px 0 22px; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0; }
.chips li { background: rgba(255,255,255,.75); border: 1px solid #fff; border-radius: 999px; padding: 7px 14px; font: 700 .9rem/1.3 var(--font-display); color: var(--ink-soft); }
.hero-visual { position: relative; display: flex; justify-content: center; min-height: 560px; }
.phone {
  position: relative; width: 290px; border-radius: 42px; padding: 11px; background: #1A2330;
  box-shadow: 0 40px 80px -30px rgba(11,37,89,.55), inset 0 0 0 2px #2A3546;
}
.phone img { border-radius: 32px; width: 100%; }
.phone::before { content: ""; position: absolute; top: 20px; left: 50%; translate: -50% 0; width: 12px; height: 12px; border-radius: 50%; background: #0B1018; z-index: 2; }
.phone-tilt { transform: rotate(4deg); animation: float 7s ease-in-out infinite; }
.hero-mascot { position: absolute; left: -10px; bottom: -40px; width: 230px; filter: drop-shadow(0 18px 24px rgba(11,37,89,.18)); animation: wave 5s ease-in-out infinite; transform-origin: 50% 90%; }
.bubble {
  position: absolute; right: -6px; top: 34px; max-width: 220px; background: #fff; border-radius: 20px 20px 20px 6px;
  padding: 12px 16px; font: 800 .95rem/1.4 var(--font-display); box-shadow: var(--shadow-sm); animation: pop 6s ease-in-out infinite;
}
@keyframes float { 50% { transform: rotate(4deg) translateY(-12px); } }
@keyframes wave { 0%,100% { transform: rotate(0); } 8% { transform: rotate(-4deg); } 16% { transform: rotate(3deg); } 24% { transform: rotate(0); } }
@keyframes pop { 0%, 70%, 100% { transform: scale(1); } 75% { transform: scale(1.06); } }

/* ---------- sections ---------- */
.section { padding: 110px 0; position: relative; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 54px; }

/* demo */
.demo-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 34px; }
.source { margin: 0 0 26px; padding: 18px 20px; background: var(--paper); border-radius: var(--radius-sm); color: var(--ink-soft); font-size: 1rem; }
.levels { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 22px; }
.level {
  border: 2px solid var(--line); background: #fff; border-radius: 18px; padding: 14px 6px 12px; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 2px; font-family: var(--font-display); color: var(--ink);
  transition: transform .2s cubic-bezier(.3,1.6,.6,1), border-color .2s, background .2s;
}
.level:hover { transform: translateY(-2px); }
.level .emoji { font-size: 1.8rem; transition: transform .3s cubic-bezier(.3,1.8,.5,1); }
.level strong { font-size: 1rem; }
.level small { font: 600 .74rem/1.3 var(--font-body); color: var(--ink-soft); text-align: center; }
.level[aria-selected="true"] .emoji { transform: scale(1.25); }
.level-kid[aria-selected="true"] { border-color: var(--kid); background: #DDF3E3; } .level-kid[aria-selected="true"] strong { color: var(--kid); }
.level-teen[aria-selected="true"] { border-color: var(--teen); background: #D6EFFA; } .level-teen[aria-selected="true"] strong { color: var(--teen); }
.level-adult[aria-selected="true"] { border-color: var(--adult); background: #E6E2FF; } .level-adult[aria-selected="true"] strong { color: var(--adult); }
.level-expert[aria-selected="true"] { border-color: var(--expert); background: #FFE6CF; } .level-expert[aria-selected="true"] strong { color: var(--expert); }
.answer { border-radius: var(--radius-sm); padding: 22px 24px; font-size: 1.12rem; line-height: 1.75; animation: fadeUp .35s ease both; }
.answer p { margin: 0; }
.answer strong { display: block; font: 900 1.22rem/1.45 var(--font-display); margin-bottom: 6px; }
.answer-kid { background: #F0FAF3; } .answer-kid strong { color: var(--kid); }
.answer-teen { background: #EEF8FD; } .answer-teen strong { color: var(--teen); }
.answer-adult { background: #F3F1FF; } .answer-adult strong { color: var(--adult); }
.answer-expert { background: #FFF4EA; } .answer-expert strong { color: var(--expert); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } }

/* use cases */
.uses { background: #fff; border-radius: 48px; }
.use-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.use-card { border-radius: var(--radius); padding: 28px; transition: transform .25s cubic-bezier(.3,1.6,.6,1); }
.use-card:hover { transform: translateY(-4px) rotate(-.5deg); }
.use-card p { color: var(--ink-soft); margin: 0; }
.use-emoji { font-size: 2.2rem; display: block; margin-bottom: 12px; }
.tone-violet { background: var(--violet-soft); } .tone-coral { background: var(--coral-soft); } .tone-green { background: var(--meadow-soft); }
.tone-sky { background: var(--sky-soft); } .tone-sun { background: var(--sun-soft); } .tone-blue { background: var(--denim-soft); }

/* features */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; margin-bottom: 110px; }
.feature-flip .feature-copy { order: 2; }
.feature-copy h3 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); font-weight: 900; }
.feature-copy p { color: var(--ink-soft); font-size: 1.12rem; }
.feature-shot { display: flex; justify-content: center; position: relative; }
.feature-shot::before { content: ""; position: absolute; inset: 10% 6%; border-radius: 50%; background: radial-gradient(circle, #D9E5FF 0%, transparent 70%); }
.feature-shot .phone { width: 300px; }
.ticks { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 10px; }
.ticks li { padding-left: 34px; position: relative; font-weight: 600; }
.ticks li::before { content: "✓"; position: absolute; left: 0; top: 1px; width: 24px; height: 24px; border-radius: 50%; background: var(--meadow-soft); color: var(--meadow); font-weight: 900; display: grid; place-items: center; font-size: .85rem; }
.bubbles { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; margin-top: 18px; }
.bubbles span { background: var(--sun-soft); color: #3D2A00; border-radius: 16px; padding: 10px 16px; font: 700 1rem/1.3 var(--font-display); }
.bubbles span:nth-child(2) { margin-left: 28px; } .bubbles span:nth-child(3) { margin-left: 12px; }
.feature-mascot { width: 170px; margin-top: 10px; }
.streak-pill { display: inline-block; margin-top: 14px; background: #FFE9D6; color: #B4560A; border-radius: 999px; padding: 10px 18px; font: 900 1.15rem/1 var(--font-display); }
.feature-wide { display: flex; gap: 36px; align-items: center; background: linear-gradient(120deg, #FFF4DC, #FFE7B0); border-radius: var(--radius); padding: 34px 44px; }
.feature-wide img { width: 120px; flex: none; }
.feature-wide p { margin: 0; color: #5B4300; font-size: 1.1rem; }

/* bilingual */
.bilingual { background: linear-gradient(135deg, #0B2559, #1E4590 60%, #2B5CB8); color: #fff; border-radius: 48px; }
.bilingual .eyebrow { background: rgba(255,255,255,.14); color: #fff; }
.bilingual .lead { color: #D9E5FF; }
.bilingual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.translate-demo { display: grid; gap: 10px; }
.td-in, .td-out { border-radius: var(--radius-sm); padding: 20px 22px; }
.td-in { background: rgba(255,255,255,.1); color: #D9E5FF; font-size: .98rem; }
.td-in .label, .td-out .label { color: inherit; opacity: .85; }
.td-out { background: #fff; color: var(--ink); font-size: 1.08rem; line-height: 1.9; box-shadow: var(--shadow); }
.td-out strong { color: var(--kid); display: block; font-family: "Zen Maru Gothic", "Noto Sans JP", sans-serif; }
.td-arrow { text-align: center; font-size: 1.6rem; color: var(--sun); animation: bob 2s ease-in-out infinite; }
@keyframes bob { 50% { transform: translateY(5px); } }

/* steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; counter-reset: s; }
.step { background: #fff; border-radius: var(--radius); padding: 30px 26px; text-align: center; box-shadow: var(--shadow-sm); position: relative; }
.step img { height: 170px; width: auto; margin: 0 auto 14px; }
.step-n { position: absolute; top: 18px; left: 18px; width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; background: var(--denim); color: #fff; font: 900 1.05rem/1 var(--font-display); }
.step p { color: var(--ink-soft); margin: 0; }

/* pricing */
.price-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.price-card { background: #fff; border-radius: var(--radius); padding: 34px; text-align: center; border: 2px solid var(--line); position: relative; }
.price-card.featured { border-color: var(--denim); box-shadow: var(--shadow); }
.price-card .badge { position: absolute; top: -14px; left: 50%; translate: -50% 0; background: var(--sun); color: #3D2A00; font: 900 .8rem/1 var(--font-display); padding: 8px 14px; border-radius: 999px; }
.price { font: 800 1.1rem/1.2 var(--font-display); color: var(--ink-soft); }
.price .n { font: 900 4rem/1 var(--font-display); color: var(--denim); vertical-align: -6px; }
.price-card p:last-child { margin: 0; color: var(--ink-soft); }
.note { text-align: center; color: var(--ink-soft); margin-top: 22px; font-size: .95rem; }

/* trust */
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.trust-card { background: #fff; border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow-sm); }
.trust-card span { font-size: 2rem; display: block; margin-bottom: 10px; }
.trust-card p { color: var(--ink-soft); margin: 0; }

/* faq */
.faq-list { display: grid; gap: 12px; }
details { background: #fff; border-radius: 20px; padding: 6px 24px; box-shadow: var(--shadow-sm); }
summary { cursor: pointer; list-style: none; padding: 18px 34px 18px 0; position: relative; font: 800 1.08rem/1.4 var(--font-display); }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 50%; translate: 0 -50%; font-size: 1.6rem; color: var(--denim); transition: transform .25s; }
details[open] summary::after { transform: rotate(45deg); }
details p { color: var(--ink-soft); padding-bottom: 12px; }

/* final cta */
.final-cta { position: relative; overflow: hidden; margin: 40px 20px 0; border-radius: 48px; background: linear-gradient(135deg, #FFF4DC, #FFE7B0 60%, #FFD9C0); padding: 70px 0; }
.final-grid { position: relative; display: grid; grid-template-columns: auto 1fr; gap: 48px; align-items: center; }
.final-grid img { width: 240px; }
.final-cta h2 { color: #3D2A00; }
.final-cta .lead { color: #6B4D00; }

/* footer */
.site-footer { padding: 80px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; }
.footer-grid h3 { font-size: .85rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); }
.footer-grid a:not(.brand):not(.play-badge) { display: block; color: var(--ink); text-decoration: none; margin: 8px 0; font-weight: 500; }
.footer-grid a:not(.brand):not(.play-badge):hover { color: var(--denim); }
.footer-brand p { color: var(--ink-soft); margin: 12px 0 6px; }
.footer-bottom { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 24px; font-size: .88rem; color: var(--ink-soft); }
.footer-bottom p { margin: 4px 0; }
.muted { opacity: .8; }

/* ---------- legal + support pages ---------- */
.policy-header { position: relative; overflow: hidden; text-align: center; padding: 72px 0 60px; background: linear-gradient(135deg, #D4EDF5, #EAF4FF 55%, #FFF4DC); border-radius: 0 0 40px 40px; }
.policy-header h1 { font-size: clamp(2.1rem, 4.4vw, 3.2rem); }
.policy-header p { color: var(--ink-soft); }
.section-eyebrow { display: inline-block; font: 800 .82rem/1 var(--font-display); letter-spacing: .12em; text-transform: uppercase; color: var(--denim); background: var(--denim-soft); padding: 8px 14px; border-radius: 999px; }
.policy-body { padding: 56px 0 40px; }
.policy-body .container > .row > div, .policy-body .col-lg-8 { max-width: 800px; margin: 0 auto; }
.policy-body h2 { font-size: 1.5rem; margin-top: 2.2em; }
.policy-body h3 { font-size: 1.15rem; margin-top: 1.6em; }
.policy-body ul { padding-left: 1.3em; } .policy-body li { margin: .35em 0; }
.policy-card, .info-card { background: #fff; border-radius: var(--radius-sm); padding: 20px 24px; box-shadow: var(--shadow-sm); border-left: 5px solid var(--sky); }
.policy-header .container .row, .policy-body .container .row { display: block; }

.form-card { background: #fff; border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); margin-top: 22px; }
.field { margin-bottom: 18px; }
.field label { display: block; font: 800 .95rem/1.4 var(--font-display); margin-bottom: 6px; }
.field small { display: block; color: var(--ink-soft); margin-top: 4px; }
.field input[type=email], .field input[type=text], .field textarea {
  width: 100%; font: inherit; padding: 14px 16px; border-radius: 14px; border: 2px solid var(--line); background: var(--paper);
  transition: border-color .2s, background .2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--denim); background: #fff; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 600; }
.check input { width: 20px; height: 20px; margin-top: 4px; accent-color: var(--denim); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.alert { border-radius: 14px; padding: 14px 18px; margin-bottom: 18px; font-weight: 600; }
.alert-error { background: #FFDAD6; color: #410002; } .alert-success { background: var(--meadow-soft); color: #173A26; }
button.btn { border: 0; cursor: pointer; }

.error-page { text-align: center; padding: 90px 0 60px; }
.error-page img { width: 220px; margin: 0 auto 10px; }

/* ---------- reveal on scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); transition-delay: var(--d, 0s); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .hero-grid, .feature, .bilingual-grid, .final-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 32px; }
  .hero-visual { min-height: 520px; }
  .feature-flip .feature-copy { order: 0; }
  .feature { gap: 34px; margin-bottom: 80px; text-align: left; }
  .use-grid, .trust-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .final-grid { text-align: center; } .final-grid img { margin: 0 auto; width: 180px; }
}
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 4px;
    background: #fff; padding: 12px 20px 22px; box-shadow: 0 20px 30px -20px rgba(11,37,89,.35);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn) { padding: 14px 4px; border-bottom: 1px solid var(--line); }
  .nav-links .btn { justify-content: center; margin-top: 10px; }
  .lang-switch { border: 0; background: none; }
  .section { padding: 76px 0; }
  .use-grid, .trust-grid, .price-grid { grid-template-columns: 1fr; }
  .levels { grid-template-columns: repeat(2, 1fr); }
  .demo-card { padding: 22px; }
  .phone { width: 250px; }
  .hero-mascot { width: 160px; left: -4px; }
  .bubble { right: 0; top: 0; max-width: 180px; font-size: .85rem; }
  .feature-wide { flex-direction: column; text-align: center; padding: 30px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .final-cta { margin: 30px 10px 0; }
  .hero, .uses, .bilingual { border-radius: 0 0 32px 32px; }
  .uses, .bilingual { border-radius: 32px; }
}