.page-index { background: #0c1018; color: #edf1fa; }
.page-index .ai-index-hero { position: relative; overflow: hidden; padding: 94px 0 76px; }
.ai-index-motion { position: absolute; inset: 0; pointer-events: none; background: #08111e url('/assets/video/shinna-connect-poster.jpg') center / cover no-repeat; }
.ai-background-video { display: block; width: 100%; height: 100%; object-fit: cover; }
.ai-index-motion::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(12,16,24,.78) 0%, rgba(12,16,24,.55) 43%, rgba(12,16,24,.14) 100%), linear-gradient(0deg, #0c1018 0%, transparent 24%, transparent 80%, rgba(12,16,24,.18) 100%); }
.ai-index-layout { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr 1fr; gap: 70px; align-items: center; }
.ai-motion-toggle { position: absolute; right: 28px; bottom: 20px; z-index: 2; display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; color: #a8bad5; background: rgba(12,16,24,.55); border: 1px solid rgba(148,177,218,.24); border-radius: 50%; font-size: 12px; cursor: pointer; }
.ai-motion-toggle:hover { color: #fff; border-color: #85e0c8; }
.ai-motion-toggle:focus-visible { outline: 2px solid #85e0c8; outline-offset: 4px; }
.ai-index-intro h1 { font-size: clamp(38px, 5.4vw, 64px); line-height: 1.14; }
.ai-index-intro .eyebrow { color: #a4b3d1; opacity: 1; letter-spacing: .12em; }
.ai-index-intro .lead { margin-top: 26px; font-size: 17px; line-height: 1.9; color: #acb6c9; opacity: 1; }
.ai-index-signature { margin-top: 38px; font-size: 11px; letter-spacing: .12em; color: #748199; }
.ai-contents { padding: 28px; border: 1px solid #29354c; border-radius: 18px; background: rgba(19, 26, 40, .75); scroll-margin-top: 88px; }
.ai-contents-kicker { display: flex; justify-content: space-between; font-size: 10px; font-weight: 600; letter-spacing: .2em; color: #7b90b4; }
.ai-contents ol { margin-top: 20px; list-style: none; }
.ai-contents li + li { border-top: 1px solid #283247; }
.ai-contents li a { display: grid; grid-template-columns: 28px 1fr 16px; gap: 8px; align-items: center; padding: 13px 0; font-size: 13px; line-height: 1.55; transition: color .2s; }
.ai-contents li a:hover { color: #78decc; }
.ai-contents-number { color: #7b90b4; font-size: 10px; letter-spacing: .08em; }
.ai-contents-arrow { color: #7b90b4; text-align: right; }
.ai-service-list { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; padding-bottom: 78px; }
.ai-service { padding: 34px; border: 1px solid #283247; border-radius: 18px; background: #111722; scroll-margin-top: 88px; }
.ai-service:not(.ai-service-basic) { grid-column: 1 / -1; }
.ai-service-komorebi, .ai-service-openconcept, .ai-service-hce { display: grid; grid-template-columns: .95fr 1.05fr; gap: 46px; align-items: center; padding: 40px; }
.ai-service-number { display: block; margin-bottom: 18px; color: #7f92b6; font-size: 10px; font-weight: 600; letter-spacing: .16em; }
.ai-service-copy h2 { font-size: clamp(23px, 2.6vw, 30px); line-height: 1.4; letter-spacing: -.015em; }
.ai-service-copy > p { margin-top: 16px; color: #a9b4c8; font-size: 14px; line-height: 1.9; }
.ai-service-copy > .ai-service-detail { margin-top: 14px; }
.ai-back-to-contents { display: inline-flex; gap: 10px; align-items: center; margin-top: 24px; color: #7789a6; font-size: 11px; }
.ai-back-to-contents:hover { color: #edf1fa; }
.ai-service-cloud .ai-service-copy { display: grid; grid-template-columns: 1fr 1.15fr; column-gap: 42px; }
.ai-service-cloud .ai-service-number { grid-column: 1; }
.ai-service-cloud h2 { grid-column: 1; }
.ai-service-cloud .ai-service-copy > p { grid-column: 2; grid-row: 1 / 4; margin-top: 0; align-self: center; }
.ai-service-cloud .ai-back-to-contents { grid-column: 1; }
.ai-application { min-width: 0; padding: 30px; border-radius: 12px; border: 1px solid #2c4447; background: linear-gradient(145deg, #162b2b, #132121); }
.ai-application-label { margin-bottom: 20px; color: #85a6a6; font-size: 10px; letter-spacing: .06em; }
.ai-application-name { display: flex; align-items: center; gap: 10px; font-size: 25px; font-weight: 700; letter-spacing: -.025em; }
.ai-app-dot { width: 11px; height: 11px; border-radius: 50%; background: #7ac4a5; box-shadow: 0 0 0 5px rgba(122, 196, 165, .1); }
.ai-application-heading { margin-top: 16px; font-size: 16px; font-weight: 600; line-height: 1.7; }
.ai-application-description { margin-top: 10px; color: #a4b9b5; font-size: 13px; line-height: 1.85; }
.ai-feature-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; list-style: none; }
.ai-feature-tags li { border: 1px solid rgba(158, 188, 191, .2); border-radius: 5px; padding: 5px 9px; font-size: 10px; line-height: 1.5; color: #bdd1cd; }
.ai-application-link { display: inline-flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 24px; font-size: 13px; font-weight: 700; color: #85e0c8; line-height: 1.6; }
.ai-application-link:hover { color: #fff; }
.ai-sample-links { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 16px; padding-top: 16px; border-top: 1px solid rgba(158, 188, 191, .16); }
.ai-sample-links a { color: #a8bdbc; font-size: 11px; line-height: 1.7; }
.ai-sample-links a:hover { color: #fff; }
.ai-application-openconcept { border-color: #394361; background: linear-gradient(145deg, #1b2440, #181d31); }
.ai-openconcept-brand { display: flex; align-items: center; gap: 12px; }
.ai-openconcept-brand img { width: 42px; height: 42px; object-fit: contain; }
.ai-application-openconcept .ai-application-label { color: #98a9d3; }
.ai-application-openconcept .ai-application-description { color: #a8b4d0; }
.ai-application-openconcept .ai-feature-tags li { color: #bfccea; }
.ai-application-openconcept .ai-sample-links a { color: #a9b8d7; }
.ai-service-hce { border-color: #2a424b; }
.ai-application-hce { background: linear-gradient(145deg, #122e39, #14212e); border-color: #305160; }
.ai-application-hce .ai-application-label { color: #92b7c6; margin-bottom: 12px; letter-spacing: .14em; }
.ai-hce-wordmark { font-size: 62px; line-height: 1; font-weight: 800; letter-spacing: -.06em; }
.ai-hce-dot { color: #69d8c1; }
.ai-application-domain { display: block; margin-top: 12px; color: #83a2b3; font-size: 10px; letter-spacing: .025em; overflow-wrap: anywhere; }
.ai-index-contact { padding: 65px 0 72px; background: #111928; border-top: 1px solid #253047; }
.ai-contact-layout { display: grid; grid-template-columns: 1fr auto; gap: 46px; align-items: center; }
.ai-index-contact .eyebrow { font-size: 10px; color: #8da2c9; opacity: 1; }
.ai-index-contact h2 { font-size: clamp(24px, 3vw, 32px); line-height: 1.45; }
.ai-index-contact p { margin-top: 14px; font-size: 14px; line-height: 1.8; max-width: 670px; color: #a6b3c9; }
.ai-index-contact .btn { white-space: nowrap; background: #b4cefd; color: #0c1525; }
.ai-index-contact .btn:hover { background: #d5e3ff; }
.page-index a:focus-visible { outline: 2px solid #85e0c8; outline-offset: 5px; }
.ai-index-hero { scroll-margin-top: 64px; }
@media (max-width: 1000px) {
  .ai-index-layout { gap: 34px; }
  .ai-service-komorebi, .ai-service-openconcept, .ai-service-hce { gap: 28px; padding: 30px; }
}
@media (max-width: 760px) {
  .page-index .ai-index-hero { padding: 54px 0 38px; }
  .ai-index-layout { grid-template-columns: 1fr; gap: 36px; }
  .ai-index-intro .lead { margin-top: 20px; font-size: 15px; }
  .ai-index-signature { margin-top: 24px; }
  .ai-contents { padding: 24px; }
  .ai-contents li a { font-size: 13px; padding: 12px 0; }
  .ai-service-list { grid-template-columns: 1fr; gap: 16px; padding-bottom: 44px; }
  .ai-service { padding: 26px; }
  .ai-service-komorebi, .ai-service-openconcept, .ai-service-hce { grid-template-columns: 1fr; gap: 26px; }
  .ai-service-cloud .ai-service-copy { display: block; }
  .ai-service-cloud .ai-service-copy > p { margin-top: 16px; }
  .ai-application { padding: 24px; }
  .ai-application-name { font-size: 23px; }
  .ai-application-label { font-size: 10px; line-height: 1.7; }
  .ai-contact-layout { grid-template-columns: 1fr; gap: 26px; }
  .ai-index-contact { padding: 44px 0 50px; }
  .ai-index-contact .btn { justify-self: start; }
}
@media (max-width: 420px) {
  .page-index .wrap { padding-left: 20px; padding-right: 20px; }
  .ai-service { padding: 24px 20px; }
  .ai-application { padding: 22px 18px; }
  .ai-contents { padding: 22px 20px; }
  .ai-index-intro h1 { font-size: 36px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ai-background-video, .ai-motion-toggle { display: none; }
}

.ai-service-learning { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.ai-application-learning { background: linear-gradient(145deg, #302642, #1d2335); border-color: #6c577c; }
@media(max-width:760px) { .ai-service-learning { grid-template-columns: 1fr; gap: 26px; } }