/* Mobile first. No external fonts or CSS libraries. */
:root {
  --ink: #182b49;
  --muted: #506786;
  --blue: #325cea;
  --purple: #7751ee;
  --line: #dbe5f5;
  --soft: #f1f6ff;
  --radius: 22px;
  --shadow: 0 14px 45px rgb(41 66 130 / 6%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; color: var(--ink); background: #fff; font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif; font-size: 15px; line-height: 1.9; -webkit-font-smoothing: antialiased; }
img, video { max-width: 100%; }
img { display: block; height: auto; }
button, input { font: inherit; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-underline-offset: 5px; }
button { cursor: pointer; }
[hidden] { display: none !important; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible { outline: 3px solid #538dff; outline-offset: 5px; }
::selection { background: #dce6ff; color: #142b55; }
h1, h2, h3 { margin: 0; font-weight: 750; overflow-wrap: anywhere; }
h1 { font-size: clamp(31px, 8vw, 46px); line-height: 1.5; letter-spacing: -.045em; }
h1 span { display: block; }
h2 { font-size: clamp(25px, 5.7vw, 36px); line-height: 1.65; letter-spacing: -.045em; margin-bottom: 24px; }
h3 { font-size: 18px; line-height: 1.75; margin: 14px 0; letter-spacing: -.02em; }
p { margin: 0 0 18px; }
figure, blockquote { margin: 0; }
.wrap { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.section { padding-block: 68px; }
.training-points { display: grid; gap: 18px; margin: 8px 0 20px; }
.training-points article { display: flex; flex-direction: column; align-items: flex-start; min-width: 0; padding: 26px; border: 1px solid #cbdcff; border-radius: var(--radius); background: linear-gradient(135deg, #f0f6ff, #fff); }
.training-points article:nth-child(2) { border-color: #ded4fb; background: linear-gradient(135deg, #f5f1ff, #fff); }
.training-point-label { display: inline-block; padding: 3px 11px; margin-bottom: 14px; border-radius: 999px; background: #e2edff; color: #2b5ac0; font-size: 11px; font-weight: 700; }
.training-points article:nth-child(2) .training-point-label { background: #ece3ff; color: #6740b2; }
.training-points h2 { font-size: clamp(20px, 3.5vw, 25px); margin-bottom: 13px; letter-spacing: -.03em; }
.training-points p { color: var(--muted); font-size: 14px; }
.training-points .text-link { margin-top: auto; }
.preparation-section { border-top: 1px solid var(--line); }
.preparation-lead { max-width: 760px; color: var(--muted); }
.preparation-grid { display: grid; gap: 20px; margin-top: 30px; }
.preparation-grid article { min-width: 0; padding: 24px; border: 1px solid var(--line); border-radius: 16px; background: var(--soft); }
.preparation-grid h3 { margin: 0 0 12px; }
.preparation-grid p { margin: 0; color: var(--muted); font-size: 14px; }
.kicker { color: var(--muted); font-size: 11px; letter-spacing: .16em; margin-bottom: 16px; }
.skip-link { position: absolute; top: -100px; left: 20px; z-index: 10; background: #fff; color: var(--blue); padding: 10px 18px; border-radius: 8px; }
.skip-link:focus { top: 12px; }

/* Standalone navigation */
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; width: min(1440px, 100%); min-height: 86px; padding: 14px 20px; margin: auto; }
.brand { flex-shrink: 0; text-decoration: none; }
.brand img { width: 158px; }
.brand small { display: block; font-size: 10px; color: var(--muted); letter-spacing: .08em; margin-top: 3px; }
nav { display: flex; gap: 16px; align-items: center; font-size: 11px; }
nav a { text-decoration: none; transition: color .2s; }
nav a:hover { color: var(--blue); }
nav a:not(.main-site-link) { display: none; }
.main-site-link { white-space: nowrap; }

/* Motion hero. The poster remains usable when JS or autoplay is unavailable. */
.hero { position: relative; isolation: isolate; overflow: hidden; padding: 64px 0 88px; background: #061126; color: #fff; }
.hero-media, .hero-shade { position: absolute; inset: 0; z-index: -1; }
.hero-media { background: #061126 url("assets/ai-training-hero-gestures-poster.jpg") 70% center / cover no-repeat; }
.hero-media video { width: 100%; height: 100%; object-fit: cover; object-position: 70% center; }
.hero-shade { background: linear-gradient(90deg, rgb(5 13 31 / 93%), rgb(5 13 31 / 81%) 52%, rgb(5 13 31 / 45%)); }
.hero-copy { position: relative; max-width: 640px; }
.hero .eyebrow { font-size: 11px; letter-spacing: .07em; color: #a5d5ff; margin-bottom: 22px; }
.label { display: inline-block; padding: 4px 13px; border: 1px solid #7394c4; border-radius: 999px; background: rgb(14 34 66 / 50%); color: #dceeff; font-size: 11px; margin-bottom: 22px; }
.hero h1 { margin-bottom: 24px; }
.lead { color: #dbe6f6; font-size: 14px; line-height: 2; max-width: 510px; margin-bottom: 28px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 24px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 25px; min-height: 54px; padding: 14px 22px; border-radius: 10px; background: linear-gradient(110deg, var(--blue), var(--purple)); color: #fff; text-decoration: none; font-size: 13px; font-weight: 700; box-shadow: 0 8px 28px rgb(54 78 240 / 20%); transition: transform .25s ease, box-shadow .25s ease; }
.button:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgb(54 78 240 / 30%); }
.text-link { color: var(--blue); font-size: 13px; }
.hero .text-link, .instructor-jump { color: #d9e9ff; }
.meta { font-size: 12px; color: #b1c1d7; margin: 26px 0 18px; }
.instructor-jump { font-size: 12px; display: inline-block; }
.hero-motion-control { position: absolute; bottom: 20px; right: 20px; display: flex; gap: 12px; align-items: center; }
.hero-motion-control > span { color: #c2d0e6; font-size: 9px; }
.hero-motion-control button { display: flex; gap: 10px; align-items: center; background: rgb(6 21 44 / 80%); border: 1px solid #6b8db3; border-radius: 6px; color: #e1ecff; padding: 8px 12px; font-size: 10px; min-height: 40px; }

/* Training facts */
.facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 25px 0; border-bottom: 1px solid var(--line); padding-block: 30px; }
.fact { padding-inline: 18px; border-left: 1px solid var(--line); }
.fact:nth-child(odd) { padding-left: 0; border: 0; }
.fact small { display: block; color: var(--muted); font-size: 11px; margin-bottom: 4px; }
.fact b { font-size: 30px; line-height: 1.5; }
.fact b span { font-size: 13px; font-weight: 500; }
.audience-fact b { display: block; font-size: 16px; line-height: 1.5; }

/* Problem and support */
.intro { display: grid; gap: 30px; align-items: center; }
.intro p { font-size: 14px; }
.confusion-illustration { border-radius: var(--radius); overflow: hidden; background: var(--soft); margin-bottom: 24px; }
.confusion-illustration img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.worries { border-top: 1px solid var(--line); }
.worry { display: flex; gap: 16px; padding: 17px 0; font-size: 13px; border-bottom: 1px solid var(--line); }
.worry span { color: var(--blue); font-size: 11px; }
.dark { background: linear-gradient(125deg, #eff6ff, #f6f5ff); }
.dark .kicker, .num { color: var(--blue); }
.supporthead { display: grid; gap: 0; }
.supporthead h2 { color: #2856a8; }
.supporthead p { font-size: 14px; }
.supportgrid { display: grid; gap: 26px; margin-top: 24px; }
.supportitem { border-top: 1px solid #b7ceef; padding-top: 24px; }
.num { font-size: 12px; }
.supportitem h3 { font-size: 18px; }
.supportitem p { font-size: 13px; color: var(--muted); margin-bottom: 0; }

/* Instructor */
.instructor-section { display: grid; gap: 32px; align-items: center; border-bottom: 1px solid var(--line); }
.instructor-photo { max-width: 340px; width: 100%; margin: auto; }
.instructor-photo img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: center 35%; border-radius: 24px; box-shadow: var(--shadow); }
.art-caption { text-align: center; color: var(--muted); font-size: 10px; margin: 12px 0 0; }
.instructor-copy .kicker { color: #6854c4; }
.instructor-role { font-size: 12px; color: var(--muted); margin-bottom: 10px; }
.instructor-copy h2 { font-size: 34px; letter-spacing: .06em; margin-bottom: 8px; }
.instructor-company { font-size: 13px; color: var(--muted); margin-bottom: 28px; }
.instructor-copy h3 { font-size: 21px; margin: 0 0 22px; }
.instructor-copy > p:not(.instructor-role):not(.instructor-company) { font-size: 14px; color: var(--muted); line-height: 2; }

/* Outcomes and optional goal selection */
.benefit-heading, .voices-heading { display: grid; gap: 0; }
.benefit-heading > p, .voices-heading > p { font-size: 14px; color: var(--muted); }
.benefit-grid { display: grid; gap: 28px; margin-top: 30px; }
.benefit-grid article { border-top: 2px solid var(--line); padding-top: 24px; }
.benefit-icon { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 13px; color: #5660d2; background: linear-gradient(130deg, #e8f2ff, #ebe7ff); margin-bottom: 14px; }
.benefit-icon svg { width: 29px; height: 29px; }
.benefit-grid article > span { font-size: 12px; color: var(--blue); }
.benefit-grid p { color: var(--muted); font-size: 14px; }
.goal-box { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(130deg, #f1f7ff, #f7f4ff); margin-top: 36px; }
.goal-box h3 { margin: 0 0 8px; }
.goal-box p { color: var(--muted); font-size: 13px; }
.goal-box fieldset { padding: 0; margin: 22px 0 0; border: 0; min-width: 0; }
.goal-box legend { font-size: 11px; color: var(--muted); margin-bottom: 12px; }
.goal-options { display: flex; gap: 10px; flex-wrap: wrap; }
.goal-options label { display: flex; align-items: center; gap: 8px; padding: 10px 12px; min-height: 44px; border: 1px solid #aac6e6; background: #fff; border-radius: 9px; font-size: 12px; cursor: pointer; transition: background .2s, border-color .2s; }
.goal-options label:has(input:checked) { color: #2454b4; background: #e1eeff; border-color: var(--blue); }
.goal-options input { accent-color: var(--blue); margin: 0; }
.goal-result { margin: 16px 0 0; }

/* Customer quotations */
.voices-section { border-top: 1px solid var(--line); }
.voice-grid { display: grid; gap: 24px; margin-top: 28px; }
.voice-card { display: flex; flex-direction: column; padding: 25px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.voice-context { color: var(--muted); font-size: 12px; margin-bottom: 16px; }
.voice-card h3 { font-size: 20px; margin: 0 0 24px; }
.quote-label { color: var(--muted); font-size: 11px; }
.voice-card blockquote { border-left: 3px solid #5792ff; margin: 12px 0 26px; padding-left: 18px; }
.voice-card blockquote p { font-size: 14px; line-height: 2; margin: 0; }
.voice-next { padding: 18px; border-radius: 10px; background: var(--soft); margin-top: auto; }
.voice-next span { font-size: 11px; color: #3b70ad; }
.voice-next p { font-size: 13px; margin: 8px 0 0; }
.voice-date, .voice-source { font-size: 11px; color: var(--muted); margin: 18px 0 0; }

/* Program and pricing */
.program-visual { display: grid; gap: 24px; align-items: center; padding: 24px; border: 1px solid #e0e6fb; border-radius: var(--radius); background: linear-gradient(120deg, #f2f7ff, #f8f6ff); margin-top: 28px; }
.program-visual-copy > p { font-size: 14px; line-height: 2; }
.program-visual img { width: 100%; mix-blend-mode: multiply; }
.visual-loop { display: flex; gap: 7px; flex-wrap: wrap; align-items: center; margin: 24px 0 16px; }
.visual-loop span { font-size: 11px; padding: 7px 9px; border: 1px solid #d8e0fa; border-radius: 7px; background: #fff; color: #3755b6; }
.visual-loop b { color: #8a80d2; font-size: 12px; }
.program-visual-copy small { font-size: 11px; color: var(--muted); }
.flow { display: grid; gap: 24px; margin-top: 30px; }
.step { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--soft); }
.step:nth-child(2) { background: #eaf1ff; }
.number { font-size: 48px; color: #739fde; line-height: 1; font-weight: 300; }
.step h3 { margin-top: 20px; }
.step p { font-size: 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.chips span { background: #fff; border: 1px solid #c2d8ef; border-radius: 5px; padding: 4px 9px; font-size: 10px; color: var(--muted); }
.note { color: var(--muted); font-size: 12px; margin: 18px 0 0; }
.fit-strip { display: grid; gap: 20px; background: var(--soft); padding: 26px; border-radius: var(--radius); margin-bottom: 35px; }
.fit-strip h2 { font-size: 24px; margin: 12px 0 0; }
.fit-strip p { font-size: 14px; margin: 0; }
.details { display: grid; gap: 28px; border-top: 1px solid var(--line); }
.details > div > p { font-size: 14px; }
.details dl { margin: 0; border-top: 1px solid var(--line); }
.details dl > div { display: grid; grid-template-columns: 80px minmax(0, 1fr); gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.details dt { color: var(--muted); font-size: 12px; }
.details dd { margin: 0; }
.price { font-size: 26px; font-weight: 700; letter-spacing: -.025em; }
.price small { font-size: 12px; font-weight: 400; }

/* Three steps and native accordion */
.steps-section { border-top: 1px solid var(--line); }
.steps-lead { color: var(--muted); font-size: 14px; }
.start-steps { display: grid; gap: 24px; list-style: none; padding: 0; margin: 32px 0 28px; }
.start-steps li { display: flex; flex-direction: column; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: #f6faff; }
.step-circle { display: grid; place-items: center; width: 45px; height: 45px; background: var(--blue); color: #fff; border-radius: 50%; font-size: 22px; font-weight: 700; }
.start-steps h3 { margin: 20px 0 18px; }
.start-steps p { font-size: 13px; color: var(--muted); }
.step-foot { margin-top: auto; padding-top: 18px; border-top: 1px solid #caddf3; color: #2466b3; font-size: 11px; }
.faq { padding-top: 0; max-width: 900px; }
details { border-top: 1px solid var(--line); padding: 22px 0; }
details:last-child { border-bottom: 1px solid var(--line); }
summary { font-size: 14px; font-weight: 650; cursor: pointer; }
details p { padding: 18px 0 0 20px; margin: 0; font-size: 14px; color: var(--muted); }
.contact { padding: 64px 20px; text-align: center; background: radial-gradient(ellipse at 20% 0, #e1edff, transparent 65%), linear-gradient(120deg, #f3f8ff, #eeebff); }
.contact h2 { max-width: 840px; margin-inline: auto; font-size: clamp(25px, 5.5vw, 36px); }
.contact > p { font-size: 14px; }
.contact-button { margin-top: 10px; min-width: 250px; }
.contact small { display: block; font-size: 11px; color: var(--muted); margin-top: 18px; }
.site-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 22px; padding: 30px 20px; max-width: 1280px; margin: auto; font-size: 11px; color: var(--muted); }
.site-footer b { color: var(--ink); }
.site-footer span { display: block; margin-top: 8px; }
.footer-links a { font-size: 12px; }

/* Tablet and desktop */
@media (min-width: 600px) {
  .training-points { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .wrap { width: min(1180px, calc(100% - 64px)); }
  .site-header { padding-inline: 32px; }
  .brand img { width: 200px; }
  nav a:first-child { display: inline; }
  .hero { padding: 80px 0 90px; }
  .hero-copy { width: 80%; }
  .hero-media video { object-position: center; }
  .hero-shade { background: linear-gradient(90deg, rgb(5 13 31 / 94%), rgb(5 13 31 / 82%) 45%, rgb(5 13 31 / 15%)); }
  .hero h1 { font-size: 46px; }
  .facts { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .fact { padding-inline: 18px; }
  .fact:nth-child(odd) { border-left: 1px solid var(--line); padding-left: 18px; }
  .fact:first-child { border: 0; padding-left: 0; }
  .fact b { font-size: 32px; }
  .audience-fact b { font-size: 15px; }
  .flow, .voice-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .instructor-section { grid-template-columns: .8fr 1.2fr; gap: 40px; }
  .instructor-photo { max-width: 370px; }
  .goal-box { padding: 32px; }
  .visual-loop span { font-size: 12px; padding-inline: 12px; }
  .site-footer { padding-inline: 32px; }
}
@media (min-width: 960px) {
  .training-points article { padding: 32px; }
  .preparation-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .section { padding-block: 100px; }
  .site-header { padding: 18px 5%; }
  .brand img { width: 220px; }
  nav { gap: 26px; font-size: 12px; }
  nav a:not(.main-site-link) { display: inline; }
  .main-site-link { border-left: 1px solid var(--line); padding-left: 24px; }
  .hero { min-height: 650px; padding: 86px 0 82px; }
  .hero-copy { width: 59%; }
  .hero h1 { font-size: clamp(46px, 4.4vw, 61px); }
  .hero .eyebrow { font-size: 13px; }
  .lead { font-size: 15px; }
  .hero-shade { background: linear-gradient(90deg, rgb(5 13 31 / 93%), rgb(5 13 31 / 83%) 44%, rgb(5 13 31 / 18%) 73%, rgb(5 13 31 / 2%)); }
  .hero-motion-control { right: 5%; bottom: 25px; }
  .hero-motion-control > span { font-size: 10px; }
  .facts { padding-block: 32px; }
  .fact { padding-inline: 32px; }
  .fact:nth-child(odd) { padding-left: 32px; }
  .fact:first-child { padding-left: 0; }
  .audience-fact b { font-size: 17px; }
  .intro { grid-template-columns: 1fr 1fr; gap: 65px; }
  .supporthead, .benefit-heading, .voices-heading { grid-template-columns: 1fr 1fr; gap: 70px; }
  .supportgrid, .benefit-grid, .start-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; }
  .supportgrid { margin-top: 40px; }
  .supportitem h3 { min-height: 3.5em; }
  .instructor-section { gap: 80px; }
  .instructor-copy h2 { font-size: 38px; }
  .instructor-copy h3 { font-size: 23px; }
  .instructor-photo { max-width: 410px; }
  .benefit-grid { margin-top: 35px; }
  .voice-card { padding: 32px; }
  .voice-card h3 { font-size: 21px; }
  .program-visual { grid-template-columns: 1fr 1fr; gap: 45px; padding: 30px 35px; }
  .program-visual-copy > p { font-size: 15px; }
  .step { padding: 36px; }
  .flow { gap: 28px; margin-top: 40px; }
  .fit-strip { grid-template-columns: 1fr 1fr; gap: 40px; padding: 32px; margin-bottom: 65px; }
  .fit-strip p { align-self: center; }
  .details { grid-template-columns: .8fr 1.2fr; gap: 80px; }
  .details dl > div { grid-template-columns: 120px minmax(0, 1fr); }
  .faq { padding-top: 0; }
}
@media (hover: hover) {
  .voice-card { transition: box-shadow .3s, border-color .3s; }
  .voice-card:hover { border-color: #b5cbf3; box-shadow: 0 18px 48px rgb(41 66 130 / 10%); }
}
/* Added only when IntersectionObserver is available; JS failure leaves all content visible. */
.reveal-ready { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal-ready.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0s !important; animation-duration: 0s !important; }
  .reveal-ready { opacity: 1; transform: none; }
  .button:hover { transform: none; }
}