/* Responsive composition; the public entry stays in the login's photographic world. */
@media (max-width: 1450px) {
  .wrap { width: calc(100% - 96px); }
  .header-inner { grid-template-columns: 135px minmax(0,1fr) 332px; }
  .brand { width: 135px; }
  .main-nav { width: calc(100% - 60px); margin-left: 60px; gap: 18px; }
  .main-nav a { font-size: 13px; }
  .nav-actions { gap: 12px; }
  .nav-actions .button { font-size: 13px; }
  .nav-actions .button:first-child { width: 130px; }
  .hero-content { padding-top: clamp(128px,10vw,154px); }
  .hero-description { font-size: clamp(18px,1.3021vw,20px); max-width: 620px; }
  .operation-strip { margin-top: clamp(80px,6.965vw,107px); padding: 20px 26px 24px; }
  .operation-item { gap: 20px; padding-inline: 20px; }
  .operation-item > .icon { width: 36px; height: 36px; }
  .operation-item h2 { font-size: 16px; }
  .operation-item p { font-size: 14px; }
  .operation-item small { font-size: 12px; }
  .landing-hero { min-height: 840px; }
  .section { padding-block: 96px; }
  .split-heading, .authority-layout, .audience-layout, .contact-layout, .faq-layout, .benefit-layout, .comparison-layout { gap: 72px; }
  .feature-grid { gap: 56px 64px; }
  .live-panels { gap: 60px; }
  .operation-explained { gap: 32px; }
  .pricing-plan { padding: 36px 26px 28px; }
  .pricing-plan h3 { font-size: 28px; }
}

@media (max-width: 1100px) {
  .wrap { width: calc(100% - 64px); }
  .header-inner { display: grid; grid-template-columns: 135px 1fr 46px; column-gap: 20px; height: auto; min-height: 100px; padding-block: 24px; }
  .main-nav { grid-column: 1 / -1; grid-row: 2; width: 100%; margin: 16px 0 0; gap: 8px 20px; flex-wrap: wrap; justify-content: flex-start; }
  .nav-actions { grid-column: 2; grid-row: 1; justify-self: end; }
  .menu-toggle { grid-column: 3; grid-row: 1; }
  .js .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .js .main-nav { position: absolute; left: 32px; right: 32px; top: calc(100% - 8px); width: auto; display: none; margin: 0; padding: 16px 24px; background: #0d1b3d; border: 1px solid #4c6186; border-radius: 6px; }
  .js .main-nav.is-open { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); }
  .main-nav a { font-size: 15px; min-height: 44px; }
  .site-header.is-scrolled .header-inner { height: auto; min-height: 88px; padding-block: 18px; }
  .hero-content { padding-top: 200px; }
  .js .hero-content { padding-top: 140px; }
  .hero-content h1 { font-size: 60px; }
  .hero-description { max-width: 560px; font-size: 18px; }
  .operation-columns { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 30px 0; }
  .operation-item:nth-child(4) { border-left: 0; padding-left: 4px; }
  .operation-item:nth-child(3) { padding-right: 0; }
  .operation-item h2 { margin-bottom: 14px; }
  .operation-strip { margin-top: 72px; }
  .problem-section { padding-top: 40px; }
  .problem-section h2 { max-width: 820px; font-size: 34px; }
  .problem-section h2 span { display: inline; }
  .split-heading, .authority-layout, .audience-layout, .contact-layout, .faq-layout, .benefit-layout, .comparison-layout { gap: 48px; }
  .section-heading h2 { font-size: 42px; }
  .flow-line { grid-template-columns: repeat(4,minmax(0,1fr)); gap: 44px 24px; }
  .flow-line li:nth-child(4)::before { width: 100%; }
  .flow-line h3 { min-height: 42px; }
  .live-overlay { padding-inline: 28px; }
  .live-panels { gap: 32px; padding-top: 240px; }
  .standby-board, .fight-board { padding: 20px; }
  .live-summary > div { gap: 20px; }
  .board-top { flex-wrap: wrap; }
  .board-top .status { margin-left: 0; }
  .result-row { flex-wrap: wrap; }
  .feature-grid { gap: 48px 40px; }
  .feature h3 { font-size: 24px; }
  .mini-row { flex-wrap: wrap; }
  .authority-copy { padding-block: 88px; }
  .authority-copy h2 { font-size: 44px; }
  .audience-roles h3 { font-size: 28px; }
  .audience-layout img { height: 380px; }
  .proof-numbers > div { padding-inline: 26px; }
  .testimonial { gap: 48px; grid-template-columns: 1.7fr 1fr; }
  .pricing-layout { grid-template-columns: 1fr; }
  .pricing-plan { padding: 40px; border-left: 0; border-top: 1px solid #3d5277; display: grid; grid-template-columns: 1fr 1fr; column-gap: 48px; align-items: start; }
  .pricing-plan:first-child { border-top: 0; }
  .pricing-plan h3 { grid-column: 1; grid-row: 1; }
  .pricing-plan > p:first-of-type { grid-column: 1; grid-row: 2; min-height: 0; }
  .pricing-plan .price, .pricing-plan .custom-price { grid-column: 2; grid-row: 1; margin-top: 0; padding-top: 0; }
  .pricing-plan .price-unit { grid-column: 2; grid-row: 2; }
  .registration-fee, .extra-price { grid-column: 2; }
  .fee-explanation { grid-column: 2; }
  .pricing-plan .plan-features { grid-column: 1; grid-row: 3 / span 2; }
  .pricing-plan .plan-note { grid-column: 1; }
  .pricing-plan > .button { grid-column: 2; grid-row: auto; margin-top: 24px; }
  .pricing-plan > .plan-secondary { grid-column: 2; }
  .pricing-footer { flex-direction: column; gap: 24px; }
  .contact-layout { grid-template-columns: 1fr 1.25fr; }
  .contact-form { grid-template-columns: 1fr; gap: 20px; }
  .contact-layout h2 { font-size: 42px; }
  .faq-layout h2 { font-size: 42px; }
  .final-cta h2 { font-size: 54px; }
}

@media (max-width: 767px) {
  .wrap { width: calc(100% - 40px); }
  .header-inner { grid-template-columns: 110px 1fr 44px; gap: 12px; padding-block: 20px; min-height: 90px; }
  .brand { width: 110px; }
  .nav-actions .button:first-child { min-height: 44px; width: auto; padding-inline: 12px; font-size: 12px; }
  .nav-actions .button:last-child { display: none; }
  .menu-toggle { width: 44px; height: 44px; }
  .js .main-nav { left: 20px; right: 20px; }
  .site-header.is-scrolled .header-inner { min-height: 80px; padding-block: 18px; }
  .landing-hero { min-height: 0; }
  .hero-picture { height: 620px; }
  .hero-photo { object-position: 66% center; }
  .landing-hero::after { background: linear-gradient(0deg,#0a1939 32%,rgba(10,25,57,.26) 85%),linear-gradient(90deg,rgba(10,25,57,.45),rgba(10,25,57,.2)); }
  .hero-content { padding-top: 260px; padding-bottom: 0; }
  .js .hero-content { padding-top: 144px; }
  .hero-content h1 { font-size: clamp(36px,10.3vw,48px); max-width: 540px; line-height: 1.04; }
  .hero-content h1 span { display: inline; }
  .hero-description { max-width: 500px; font-size: 16px; line-height: 1.65; margin-top: 24px !important; }
  .hero-actions { flex-direction: column; gap: 12px; margin-top: 28px; align-items: stretch; }
  .hero-actions .button { min-width: 0 !important; min-height: 52px; width: 100%; justify-content: space-between; padding-inline: 20px; }
  .operation-strip { margin-top: 48px; padding: 18px; border-radius: 6px; }
  .strip-caption { font-size: 12px; gap: 14px; }
  .strip-sequence { display: none; }
  .operation-columns { grid-template-columns: 1fr; gap: 0; margin-top: 16px; }
  .operation-item, .operation-item:nth-child(4) { gap: 18px; border-left: 0; border-top: 1px solid var(--line); padding: 18px 0; }
  .operation-item:first-child { border-top: 0; padding-left: 0; }
  .operation-item:last-child { padding-bottom: 0; }
  .operation-item > .icon { width: 28px; height: 28px; }
  .operation-item h2 { margin: 0 0 10px; font-size: 16px; }
  .operation-item p { font-size: 14px; }
  .operation-item small { font-size: 12px; margin-top: 6px; }
  .problem-section { padding-block: 72px; }
  .problem-section h2 { font-size: 30px; line-height: 1.15; text-wrap: balance; }
  .problem-intro { font-size: 15px; text-align: left; margin-top: 24px !important; }
  .convergence { grid-template-columns: 1fr; gap: 16px; margin-block: 44px; }
  .fragments { gap: 12px; padding: 12px 0; }
  .fragments > span { padding: 10px 12px; gap: 8px; font-size: 12px; }
  .fragments .icon { width: 18px; height: 18px; }
  .connection { width: 44px; height: 44px; transform: rotate(90deg); margin-inline: auto; }
  .single-source { padding-block: 12px; }
  .single-source img { width: 125px; margin-bottom: 12px; }
  .problem-reasons { grid-template-columns: 1fr; gap: 28px; }
  .problem-reasons article { padding-top: 20px; }
  .problem-reasons h3 { font-size: 23px; }
  .problem-reasons p { font-size: 15px; margin-top: 12px; }
  .scene-note { margin-top: 32px !important; }
  .section { padding-block: 72px; }
  .section-heading { margin-bottom: 36px; }
  .section-heading h2 { font-size: 34px; line-height: 1.12; }
  .section-heading h2 br { display: none; }
  .section-heading > p { font-size: 15px; margin-top: 24px; }
  .split-heading { grid-template-columns: 1fr; gap: 0; }
  .flow-line { grid-template-columns: 1fr; gap: 0; }
  .flow-line li { padding: 0 0 32px 68px; min-height: 106px; }
  .flow-line li::before { width: 1px !important; height: 100%; left: 20px; top: 20px; }
  .flow-line li:last-child::before { height: 0; }
  .flow-number { position: absolute; left: 0; top: 0; margin: 0; }
  .flow-line h3 { min-height: 0; font-size: 21px; padding-top: 6px; }
  .flow-line p { margin-top: 10px; font-size: 14px; }
  .flow-close { margin-top: 0 !important; font-size: 14px; }
  .live-overlay { padding: 22px 16px 24px; min-height: 0; }
  .live-summary { flex-direction: column; align-items: flex-start; gap: 16px; padding-bottom: 20px; }
  .live-summary > div { gap: 18px; flex-wrap: wrap; font-size: 11px; }
  .live-summary strong { font-size: 22px; }
  .live-panels { grid-template-columns: 1fr; gap: 20px; padding-top: 230px; }
  .standby-board, .fight-board { padding: 18px; }
  .board-top { font-size: 13px; }
  .board-row { flex-wrap: wrap; gap: 6px 12px; }
  .fight-clock { font-size: 56px; }
  .live-photo { height: 100%; object-position: 65% center; }
  .live-scene::before { bottom: 0; background: linear-gradient(0deg,rgba(7,21,47,.5),rgba(7,21,47,.1)); }
  .live-scene figcaption { font-size: 11px; padding: 16px; }
  .operation-explained { grid-template-columns: 1fr; gap: 24px; margin-top: 28px; }
  .operation-explained p { border-top: 1px solid var(--line); padding-top: 20px; }
  .benefit-layout { grid-template-columns: 1fr; gap: 36px; }
  .benefit-lead { padding-top: 26px; }
  .benefit-lead h3 { font-size: 52px; }
  .benefit-lead p { font-size: 15px; margin-top: 20px; }
  .benefit-evidence { font-size: 22px; margin-top: 24px; }
  .benefit-stack article { padding-block: 24px; gap: 18px; }
  .benefit-stack h3 { font-size: 24px; }
  .benefit-stack p { font-size: 15px; }
  .feature-grid { grid-template-columns: 1fr; gap: 36px; }
  .feature h3 { font-size: 24px; align-items: flex-start; }
  .feature > p { font-size: 15px; min-height: 0; }
  .mini-interface { padding: 16px; }
  .mini-heading { flex-wrap: wrap; }
  .mini-row { gap: 8px; }
  .mini-row > strong { text-align: left; }
  .authority-layout { grid-template-columns: 1fr; gap: 0; }
  .authority-copy { padding-block: 72px 40px; }
  .authority-copy h2 { font-size: 38px; }
  .authority-copy p { font-size: 15px; }
  .authority-copy p:first-of-type { font-size: 19px; }
  .authority-photo { min-height: 360px; }
  .audience-layout, .audience-reverse { grid-template-columns: 1fr; gap: 28px; }
  .audience-layout + .audience-layout { margin-top: 56px; }
  .audience-layout img { height: 290px; }
  .audience-reverse figure { order: 0; }
  .audience-roles article { padding-block: 22px; }
  .audience-roles h3 { font-size: 27px; }
  .audience-roles p { font-size: 15px; margin-top: 12px; }
  .comparison-layout { grid-template-columns: 1fr; gap: 36px; }
  .comparison-layout h3 { font-size: 25px; padding-bottom: 20px; }
  .comparison-layout li { font-size: 14px; }
  .proof-numbers { grid-template-columns: 1fr 1fr; gap: 32px 24px; padding-block: 0 20px; }
  .proof-numbers > div, .proof-numbers > div:first-child { border-left: 0; border-top: 1px solid var(--line); padding: 24px 0 0; }
  .proof-numbers strong { font-size: 52px; }
  .proof-numbers span { font-size: 12px; margin-top: 14px; }
  .testimonial { grid-template-columns: 1fr; gap: 24px; padding-block: 32px; }
  .testimonial > p { font-size: 25px; line-height: 1.4; }
  .proof-insights { grid-template-columns: 1fr; gap: 24px; }
  .pricing-plan { display: flex; padding: 32px 24px; }
  .pricing-plan h3 { font-size: 29px; }
  .pricing-plan > p:first-of-type { min-height: 0; }
  .price { margin-top: 24px !important; }
  .price > strong { font-size: 72px; }
  .registration-fee { margin-top: 24px; }
  .custom-price { padding-top: 24px !important; font-size: 38px; }
  .pricing-plan > .button { min-height: 52px; margin-top: 20px; }
  .pricing-footer { gap: 16px; }
  .pricing-footer > div { flex-direction: column; gap: 6px; }
  .contact-layout, .faq-layout { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .faq-list { min-width: 0; }
  .contact-layout h2, .faq-layout h2 { font-size: 36px; }
  .contact-layout h2 br, .faq-layout h2 br { display: none; }
  .contact-layout > div:first-child > p { margin-block: 24px; font-size: 15px; }
  .contact-form { gap: 22px; }
  .form-field label { font-size: 13px; }
  .form-field input, .form-field textarea { font-size: 16px; }
  .form-wide > .button { width: 100%; min-height: 52px; }
  .form-consent { font-size: 12px; }
  .faq-list summary { font-size: 15px; padding-block: 22px; }
  .faq-list details p { padding-right: 0; font-size: 14px; }
  .final-cta { padding-block: 72px 36px; }
  .final-cta h2 { font-size: 39px; }
  .final-cta h2 br { display: none; }
  .final-cta .wrap > p { font-size: 16px; }
  .final-signature { margin-top: 48px; padding-top: 28px; gap: 20px; flex-direction: column; align-items: flex-start; }
  .final-signature img { width: 125px; }
  .site-footer { padding-bottom: 94px; }
  .site-footer > .wrap:first-child { flex-direction: column; align-items: flex-start; gap: 14px; }
  .site-footer a { display: inline; line-height: 2; }
  .chat-launcher { right: 16px; bottom: 16px; min-height: 48px; padding: 10px 14px; font-size: 12px; }
  .chat-launcher .icon { width: 20px; height: 20px; }
  .chat-widget { right: 16px; bottom: 78px; max-height: calc(100dvh - 100px); }
}

@media (prefers-reduced-motion: reduce) {
  .shiai-landing *, .shiai-landing *::before, .shiai-landing *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .hero-photo { transform: none !important; translate: none !important; filter: none !important; }
  .fragments > span { transform: none !important; }
}
@media (prefers-reduced-motion: no-preference) {
  html:has(.shiai-landing) { scroll-behavior: smooth; }
}
.shiai-landing section[id] { scroll-margin-top: 112px; }

@media (max-width: 600px) {
  .hero-picture { bottom: 0; }
  .landing-hero::after { bottom: 0; background: linear-gradient(0deg,#0a1939 40%,rgba(7,21,47,.25) 72%,rgba(7,21,47,.6)); }
  .hero-credit { position: static; margin-top: 20px !important; font-size: 11px; line-height: 1.6; }
  .problem-section { background: #0a1939; }
}

@media (max-width: 1100px) {
  .hero-desk-photo { left: auto; right: 32px; top: 460px; width: 360px; }
  .live-panels { padding-top: 32px; }
}
@media (max-width: 767px) {
  .hero-photo { width: 100%; opacity: .6; object-position: 60% center; }
  .landing-hero::after { bottom: 0; background: linear-gradient(0deg,#0a1939 40%,rgba(7,21,47,.78) 65%,rgba(7,21,47,.55)); }
  .hero-desk-photo { position: relative; top: auto; right: auto; left: auto; width: calc(100% - 40px); max-width: 440px; margin: 20px auto 0; height: 184px; }
  .hero-content { position: relative; }
  .hero-desk-photo { display: none; }
  .live-photo { height: 300px; object-position: 65% 50%; }
  .live-panels { padding-top: 24px; }
}

@media (min-width: 768px) {
  .landing-hero::after { background: linear-gradient(90deg,rgba(7,21,47,.94),rgba(7,21,47,.77) 42%,rgba(7,21,47,.35) 72%),linear-gradient(0deg,#0a1939,transparent 25%,rgba(7,21,47,.28) 80%); }
  .hero-desk-photo { position: relative; inset: auto; width: min(360px,100%); height: 96px; margin: 11px 0 0 auto; }
  .operation-strip { margin-top: 0; }
}