.youth-ultrathink{--youth-purple:var(--kpc-violet);--youth-purple-dark:var(--kpc-violet);--youth-pink:var(--kpc-magenta);--youth-green:var(--kpc-ok);--youth-amber:var(--kpc-acid);--youth-red:var(--kpc-warn);--youth-bg-deep:var(--kpc-bg);--youth-bg-card:#ffffff08;--youth-border:var(--kpc-line);--youth-text:var(--kpc-ink);--youth-text-muted:var(--kpc-ink-2);--youth-glow-purple:0 0 40px #b465ff4d;--youth-glow-pink:0 0 40px #ff2a8a4d;font-family:var(--kpc-font-body);color:var(--youth-text);line-height:1.6}.youth-ultrathink .container{max-width:1200px;margin:0 auto;padding:0 1.5rem}.youth-hero{background:var(--youth-bg-deep);justify-content:center;align-items:center;min-height:75vh;padding-top:100px;padding-bottom:4rem;display:flex;position:relative;overflow:hidden}.youth-hero-bg{z-index:0;position:absolute;top:0;bottom:0;left:0;right:0}.hero-gradient{background:radial-gradient(80% 50% at 50% -10%,#b465ff33 0%,#0000 50%),radial-gradient(60% 40% at 90% 100%,#ff2a8a26 0%,#0000 50%),radial-gradient(40% 30% at 10% 80%,#3ce88f1a 0%,#0000 50%);position:absolute;top:0;bottom:0;left:0;right:0}.hero-pattern{background-image:radial-gradient(1px 1px at 10% 20%,#fff3 0%,#0000 100%),radial-gradient(1px 1px at 30%,#b465ff4d 0%,#0000 100%),radial-gradient(1px 1px at 50% 10%,#ff2a8a40 0%,#0000 100%),radial-gradient(1px 1px at 70% 60%,#ffffff26 0%,#0000 100%),radial-gradient(1px 1px at 90% 30%,#b465ff33 0%,#0000 100%);animation:25s ease-in-out infinite subtleFloat;position:absolute;top:0;bottom:0;left:0;right:0}@keyframes subtleFloat{0%,to{transform:translate(0)}33%{transform:translate(-5px,5px)}66%{transform:translate(5px,-5px)}}.youth-hero-content{z-index:1;text-align:center;opacity:0;max-width:900px;transition:background-color .8s cubic-bezier(.16,1,.3,1),border-color .8s cubic-bezier(.16,1,.3,1),color .8s cubic-bezier(.16,1,.3,1),opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1),box-shadow .8s cubic-bezier(.16,1,.3,1);position:relative;transform:translateY(30px)}.youth-hero-content.visible{opacity:1;transform:translateY(0)}.hero-badges{flex-wrap:wrap;justify-content:center;align-items:center;gap:.75rem;margin-bottom:1.5rem;display:flex}.youth-hero-title{margin-bottom:1.5rem}.title-small{color:var(--youth-purple);letter-spacing:.1em;text-transform:uppercase;margin-bottom:.75rem;font-size:1rem;font-weight:600;display:block}.title-main{letter-spacing:-.03em;font-size:clamp(3rem,10vw,5.5rem);font-weight:800;line-height:1;display:block}.title-accent{letter-spacing:-.03em;color:var(--kpc-ink);font-size:clamp(3rem,10vw,5.5rem);font-weight:800;line-height:1;display:block}.youth-hero-subtitle{color:var(--youth-text-muted);max-width:650px;margin:0 auto 2.5rem;font-size:1.25rem;line-height:1.7}.youth-hero-subtitle strong{color:var(--youth-text)}.hero-cta-group{flex-wrap:wrap;justify-content:center;gap:1rem;display:flex}.youth-capsule{background:linear-gradient(180deg, var(--youth-bg-deep) 0%, var(--kpc-bg-2) 100%);padding:4rem 0}.capsule-card{background:#b465ff0d;border:1px solid #b465ff33;border-radius:16px;padding:2rem}.capsule-content h2{color:var(--youth-purple);margin-bottom:1rem;font-size:1.5rem;font-weight:700}.capsule-content p{color:var(--youth-text-muted);margin-bottom:1rem;font-size:1rem;line-height:1.8}.capsule-content .kpc-btn{margin-top:.5rem}.section-header{text-align:center;margin-bottom:3rem}.section-header h2{letter-spacing:-.02em;margin-bottom:1rem;font-size:clamp(2rem,5vw,3rem);font-weight:800}.section-subtitle{color:var(--youth-text-muted);max-width:600px;margin:0 auto;font-size:1.125rem}.youth-trust{background:var(--kpc-bg-2);border-bottom:1px solid var(--youth-border);padding:3rem 0}.stat-detail{color:var(--youth-text-muted);margin-top:4px;font-size:.75rem}.youth-difference{background:var(--youth-bg-deep);padding:6rem 0}.difference-layout{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:4rem;display:grid}@media (max-width:900px){.difference-layout{grid-template-columns:minmax(0,1fr);gap:3rem}}.difference-content h2{margin-bottom:1.5rem;font-size:clamp(1.75rem,4vw,2.5rem);font-weight:800;line-height:1.2}.difference-content h2 em{color:var(--kpc-ink);font-style:normal}.difference-intro{color:var(--youth-text-muted);margin-bottom:1rem;font-size:1.125rem;line-height:1.7}.difference-comparison{flex-direction:column;gap:1.5rem;display:flex}.comparison-card{border-radius:16px;padding:1.5rem;transition:background-color .3s,border-color .3s,color .3s,opacity .3s,transform .3s,box-shadow .3s}.comparison-card.other{border:1px solid var(--kpc-line);background:#ffffff08}.comparison-card.kpca{background:linear-gradient(135deg,#b465ff1a,#ff2a8a1a);border:1px solid #b465ff4d}.card-header{align-items:center;gap:.75rem;margin-bottom:1rem;display:flex}.card-icon{font-size:1.5rem}.card-header h3{font-size:1.125rem;font-weight:700}.comparison-card ul{margin:0;padding:0;list-style:none}.comparison-card li{color:var(--youth-text-muted);border-bottom:1px solid var(--youth-border);padding:.5rem 0;font-size:.95rem}.comparison-card li:last-child{border-bottom:none}.comparison-card.other li{opacity:.6;text-decoration:line-through}.comparison-card.kpca li{color:var(--youth-text);font-weight:500}.youth-proof{background:var(--kpc-bg-2);padding:6rem 0}.proof-card{background:var(--youth-bg-card);border:1px solid var(--youth-border);border-radius:20px;margin-bottom:1.5rem;padding:2rem;transition:background-color .3s,border-color .3s,color .3s,opacity .3s,transform .3s,box-shadow .3s}.proof-card:hover{border-color:#b465ff4d}.proof-quote{color:var(--youth-text-muted);margin-bottom:0;font-size:1.125rem;line-height:1.8}.achieve-item{flex-direction:column;gap:.5rem;font-style:normal;display:flex}.achieve-item h3{color:var(--youth-text);font-size:1.25rem;font-weight:700}.achieve-item p{color:var(--youth-text-muted);margin:0;font-size:1rem;line-height:1.7}.proof-secondary{grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem;display:grid}@media (max-width:768px){.proof-secondary{grid-template-columns:minmax(0,1fr)}}.proof-secondary .proof-card{margin-bottom:0}.youth-showcase{background:var(--youth-bg-deep);padding:6rem 0}.showcase-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:1.25rem;display:grid}@media (max-width:1000px){.showcase-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:550px){.showcase-grid{grid-template-columns:minmax(0,1fr)}}.showcase-card{background:var(--youth-bg-card);border:1px solid var(--youth-border);border-radius:16px;flex-direction:column;gap:.75rem;padding:1.5rem;transition:background-color .3s,border-color .3s,color .3s,opacity .3s,transform .3s,box-shadow .3s;display:flex}.showcase-card:hover{border-color:#b465ff4d;transform:translateY(-3px)}.showcase-card h3{color:var(--youth-text);margin:0;font-size:1rem;font-weight:700}.showcase-card p{color:var(--youth-text-muted);flex:1;margin:0;font-size:.875rem;line-height:1.6}.showcase-track{color:var(--youth-purple);border-top:1px solid var(--youth-border);padding-top:.5rem;font-size:.75rem;font-weight:600}.youth-tracks{background:var(--youth-bg-deep);padding:6rem 0}.tracks-selector{flex-wrap:wrap;justify-content:center;gap:.75rem;margin-bottom:2rem;display:flex}.track-tab{background:var(--youth-bg-card);border:2px solid var(--youth-border);cursor:pointer;border-radius:12px;align-items:center;gap:.5rem;padding:.75rem 1.25rem;font-size:.9rem;transition:background-color .3s,border-color .3s,color .3s,opacity .3s,transform .3s,box-shadow .3s;display:flex}.track-tab:hover{border-color:var(--track-color,var(--youth-purple));background:#ffffff0d}.track-tab.active{border-color:var(--track-color,var(--youth-purple));background:#b465ff26;box-shadow:0 5px 20px #0003}.track-icon{font-family:var(--kpc-font-jp);color:var(--track-color,var(--youth-purple));font-size:1.25rem;font-weight:700}.track-name{color:var(--youth-text);font-weight:600}@media (max-width:600px){.track-tab{flex:calc(50% - .75rem);justify-content:center}.track-name{display:none}.track-icon{font-size:1.5rem}}.track-detail{background:var(--youth-bg-card);border:1px solid var(--youth-border);border-radius:24px;padding:2.5rem;position:relative;overflow:hidden}.track-detail:before{content:"";background:var(--track-color,var(--youth-purple));height:4px;position:absolute;top:0;left:0;right:0}.track-header{align-items:center;gap:1rem;margin-bottom:1.5rem;display:flex}.track-icon-large{font-family:var(--kpc-font-jp);color:var(--track-color,var(--youth-purple));font-size:3rem;font-weight:700;line-height:1}.track-header h3{margin-bottom:.25rem;font-size:1.75rem;font-weight:800}.track-tagline{color:var(--track-color,var(--youth-purple));font-size:1rem;font-weight:500}.track-description{color:var(--youth-text-muted);margin-bottom:2rem;font-size:1.1rem;line-height:1.7}.track-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:2rem;margin-bottom:2rem;display:grid}@media (max-width:700px){.track-grid{grid-template-columns:minmax(0,1fr)}}.track-skills h4,.track-outcome h4{text-transform:uppercase;letter-spacing:.05em;color:var(--track-color,var(--youth-purple));margin-bottom:1rem;font-size:.875rem;font-weight:700}.track-skills ul{margin:0;padding:0;list-style:none}.track-skills li{border-bottom:1px solid var(--youth-border);align-items:center;gap:.75rem;padding:.625rem 0;font-size:.95rem;display:flex}.track-skills li:last-child{border-bottom:none}.skill-check{color:var(--track-color,var(--youth-green));font-weight:700}.outcome-text{color:var(--youth-text);margin-bottom:1.5rem;font-size:1rem;font-weight:500}.career-tags{flex-wrap:wrap;gap:.5rem;display:flex}.career-tag{border:1px solid var(--youth-border);color:var(--youth-text-muted);background:#ffffff0d;border-radius:100px;padding:.375rem .875rem;font-size:.8rem}.youth-timeline{background:var(--kpc-bg-2);padding:6rem 0}.timeline-visual{grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem;display:grid}@media (max-width:900px){.timeline-visual{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:500px){.timeline-visual{grid-template-columns:minmax(0,1fr)}}.timeline-phase{background:var(--youth-bg-card);border:1px solid var(--youth-border);cursor:pointer;border-radius:16px;padding:1.5rem;transition:background-color .3s,border-color .3s,color .3s,opacity .3s,transform .3s,box-shadow .3s;position:relative}.timeline-phase:hover{border-color:#b465ff4d}.timeline-phase.active{border-color:var(--youth-purple);background:#b465ff1a;transform:translateY(-5px);box-shadow:0 10px 30px #b465ff33}.phase-indicator{background:var(--youth-bg-card);border:2px solid var(--youth-border);border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;margin-bottom:1rem;transition:background-color .3s,border-color .3s,color .3s,opacity .3s,transform .3s,box-shadow .3s;display:flex}.timeline-phase.active .phase-indicator{background:linear-gradient(135deg, var(--youth-purple), var(--youth-pink));border-color:#0000}.phase-number{color:var(--youth-text-muted);font-size:1rem;font-weight:700}.timeline-phase.active .phase-number{color:#fff}.phase-weeks{color:var(--youth-purple);margin-bottom:.5rem;font-size:.75rem;font-weight:600}.phase-title{margin-bottom:.5rem;font-size:1.125rem;font-weight:700}.phase-description{color:var(--youth-text-muted);font-size:.875rem;line-height:1.6}.youth-culture{background:var(--youth-bg-deep);padding:6rem 0}.culture-layout{grid-template-columns:minmax(0,1fr) 2fr;align-items:start;gap:4rem;display:grid}@media (max-width:900px){.culture-layout{grid-template-columns:minmax(0,1fr);gap:2rem}}.culture-content h2{margin-bottom:1rem;font-size:clamp(1.75rem,4vw,2.25rem);font-weight:800;line-height:1.2}.culture-content p{color:var(--youth-text-muted);font-size:1rem;line-height:1.7}.philosophy-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;display:grid}@media (max-width:700px){.philosophy-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}.philosophy-card{background:var(--youth-bg-card);border:1px solid var(--youth-border);border-radius:12px;flex-direction:column;padding:1.25rem;transition:background-color .3s,border-color .3s,color .3s,opacity .3s,transform .3s,box-shadow .3s;display:flex}.philosophy-card:hover{border-color:#b465ff4d;transform:translateY(-3px)}.philosophy-term{color:var(--youth-text);margin-bottom:.5rem;font-size:1.25rem;font-weight:700}.philosophy-meaning{color:var(--youth-text-muted);font-size:.8rem;line-height:1.5}.youth-faq{background:var(--kpc-bg-2);padding:6rem 0}.faq-list{max-width:800px;margin:0 auto}.faq-item{border:1px solid var(--youth-border);border-radius:12px;margin-bottom:1rem;transition:background-color .3s,border-color .3s,color .3s,opacity .3s,transform .3s,box-shadow .3s;overflow:hidden}.faq-item:hover{border-color:#b465ff4d}.faq-item.faq-open{border-color:var(--youth-purple);box-shadow:0 5px 20px #b465ff26}.faq-question{background:var(--youth-bg-card);cursor:pointer;text-align:left;width:100%;color:var(--youth-text);border:none;justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;font-size:1rem;font-weight:600;transition:background-color .3s,border-color .3s,color .3s,opacity .3s,transform .3s,box-shadow .3s;display:flex}.faq-question:hover{background:#ffffff0d}.faq-icon{color:var(--youth-purple);font-size:1.5rem;font-weight:300;transition:transform .3s}.faq-open .faq-icon{transform:rotate(180deg)}.faq-answer{max-height:0;transition:max-height .3s;overflow:hidden}.faq-open .faq-answer{max-height:300px}.faq-answer p{color:var(--youth-text-muted);padding:0 1.5rem 1.5rem;font-size:.95rem;line-height:1.7}.youth-final-cta{background:var(--youth-bg-deep);padding:6rem 0}.final-cta-card{text-align:center;background:linear-gradient(135deg,#b465ff1a,#ff2a8a1a);border:1px solid #b465ff40;border-radius:32px;padding:4rem 3rem;position:relative;overflow:hidden}.final-cta-card:before{content:"";pointer-events:none;background:radial-gradient(circle at 30% 20%,#b465ff26 0%,#0000 50%),radial-gradient(circle at 70% 80%,#ff2a8a1a 0%,#0000 50%);position:absolute;top:0;bottom:0;left:0;right:0}.cta-content{max-width:650px;margin:0 auto 2.5rem;position:relative}.cta-content h2{margin-bottom:1.25rem;font-size:clamp(1.75rem,4vw,2.5rem);font-weight:800}.cta-content p{color:var(--youth-text-muted);margin-bottom:1rem;font-size:1.1rem;line-height:1.7}.cta-highlight{font-weight:700;color:var(--youth-text)!important;font-size:1.25rem!important}.cta-actions{flex-wrap:wrap;justify-content:center;gap:1rem;margin-bottom:2rem;display:flex;position:relative}.cta-primary-large,.cta-secondary-large{padding:1.125rem 3rem;font-size:1.125rem}.cta-trust{color:var(--youth-text-muted);flex-wrap:wrap;justify-content:center;gap:.75rem;font-size:.875rem;display:flex;position:relative}.youth-sponsor{background:var(--kpc-bg-2);border-top:1px solid var(--youth-border);padding:4rem 0}.sponsor-content{text-align:center;max-width:600px;margin:0 auto}.sponsor-content h3{margin-bottom:.75rem;font-size:1.5rem;font-weight:700}.sponsor-content p{color:var(--youth-text-muted);margin-bottom:1.5rem;font-size:1rem;line-height:1.7}.sponsor-actions{flex-wrap:wrap;justify-content:center;gap:1rem;display:flex}@media (max-width:600px){.youth-hero{min-height:auto;padding-top:100px;padding-bottom:3rem}.title-main,.title-accent{font-size:2.5rem}.youth-hero-subtitle{font-size:1rem}.hero-cta-group{flex-direction:column;align-items:stretch}.hero-cta-group .kpc-btn{justify-content:center}.proof-card.featured{padding:2rem}.track-detail{padding:1.5rem}.track-header{text-align:center;flex-direction:column}.final-cta-card{padding:2.5rem 1.5rem}.cta-actions{flex-direction:column;align-items:stretch}.cta-primary-large,.cta-secondary-large{justify-content:center}}@media (prefers-reduced-motion:reduce){.hero-pattern,.youth-hero-content{animation:none}.youth-hero-content{opacity:1;transform:none}.timeline-phase.active,.philosophy-card:hover,.showcase-card:hover,.track-tab.active,.youth-ultrathink .kpc-btn:hover,.youth-ultrathink .kpc-card:hover{transform:none}}.track-tab:focus-visible{outline:3px solid var(--youth-purple);outline-offset:3px}.faq-question:focus-visible{outline:3px solid var(--youth-purple);outline-offset:3px}.youth-ultrathink .kpc-btn:focus-visible{outline:3px solid var(--youth-purple);outline-offset:3px}