/* =========================================================
   AI PRINT
   商品別活用ガイド 共通テンプレート
========================================================= */

.ai-usecase-page,
.ai-usecase-page *,
.ai-usecase-page *::before,
.ai-usecase-page *::after{
  box-sizing:border-box;
}

.ai-usecase-page{
  --ai-text:#111827;


  width:100%;
  overflow:hidden;
  color:var(--ai-text);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Helvetica Neue",
    "Noto Sans JP",
    "Yu Gothic",
    YuGothic,
    Meiryo,
    sans-serif;
}

.ai-usecase-page img{
  display:block;
  width:100%;
  max-width:100%;
  height:auto;
}

.ai-usecase-page a{
  text-decoration:none;
}


/* =========================================================
   HERO
========================================================= */

.ai-usecase-hero{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(
      circle at 12% 20%,
      rgba(129,140,248,.20),
      transparent 30%
    ),
    radial-gradient(
      circle at 90% 15%,
      rgba(168,85,247,.18),
      transparent 28%
    ),
    linear-gradient(
      180deg,
      #fbfbff 0%,
      #f4f3ff 100%
    );
}

.ai-usecase-hero__inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.08fr) minmax(300px,.92fr);
  align-items:center;
  gap:40px;
  width:min(1080px,calc(100% - 48px));
  min-height:520px;
  margin:0 auto;
  padding:70px 0 85px;
}

.ai-usecase-hero__decoration{
  position:absolute;
  inset:0;
  pointer-events:none;
}

.ai-usecase-hero__orb{
  position:absolute;
  border-radius:50%;
}

.ai-usecase-hero__orb--01{
  top:30px;
  right:-120px;
  width:350px;
  height:350px;
  background:linear-gradient(
    145deg,
    rgba(79,70,229,.13),
    rgba(168,85,247,.17)
  );
}

.ai-usecase-hero__orb--02{
  bottom:-180px;
  left:-100px;
  width:350px;
  height:350px;
  background:linear-gradient(
    145deg,
    rgba(6,182,212,.1),
    rgba(79,70,229,.1)
  );
}

.ai-usecase-hero__grid{
  position:absolute;
  inset:0;
  opacity:.35;
  background-image:
    linear-gradient(rgba(99,102,241,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(99,102,241,.055) 1px,transparent 1px);
  background-size:43px 43px;
}

.ai-usecase-hero__status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:18px;
  padding:7px 13px;
  border:1px solid rgba(79,70,229,.2);
  border-radius:999px;
  background:rgba(255,255,255,.82);
  color:#4f46e5;
  box-shadow:0 8px 22px rgba(79,70,229,.08);
  font-size:11px;
  font-weight:800;
  letter-spacing:.12em;
}

.ai-usecase-page .ai-usecase-hero__eyebrow{
  margin:0 0 10px;
  color:#6366f1;
  font-size:16px;
  font-weight:700;
}

.ai-usecase-page .ai-usecase-hero__title{
  margin:0 0 22px;
  padding:0;
  border:0;
  color:#111827;
  font-size:clamp(36px,4.2vw,48px);
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.045em;
}

.ai-usecase-page .ai-usecase-hero__title::after{
  display:none;
}

.ai-usecase-hero__title span{
  background:linear-gradient(
    90deg,
    #4f46e5,
    #7c3aed,
    #a855f7,
    #ec4899
  );
  color:transparent;
  background-clip:text;
  -webkit-background-clip:text;
}

.ai-usecase-page .ai-usecase-hero__lead{
  margin:0 0 25px;
  color:#4b5563;
  font-size:16px;
  line-height:2;
}

.ai-usecase-hero__points{
  display:flex;
  flex-wrap:wrap;
  gap:10px 18px;
}

.ai-usecase-hero__point{
  display:flex;
  align-items:center;
  gap:6px;
  color:#374151;
  font-size:16px;
  font-weight:700;
}

.ai-usecase-hero__point .material-symbols-outlined{
  color:#6366f1;
  font-size:24px;
}

.ai-usecase-hero__visual{
  position:relative;
}

.ai-usecase-hero__image{
  margin:0;
  overflow:hidden;
  border:1px solid rgba(99,102,241,.16);
  border-radius:28px;
  background:#fff;
  box-shadow:
    0 28px 58px rgba(49,46,129,.14),
    0 7px 17px rgba(49,46,129,.06);
}

.ai-usecase-hero__image img{
  aspect-ratio:1 / 1;
  object-fit:cover;
}


/* =========================================================
   NAV
========================================================= */

.ai-usecase-nav{
  position:relative;
  z-index:4;
  margin-top:25px;
}

.ai-usecase-nav__inner{
  width:min(1080px,calc(100% - 48px));
  margin:0 auto;
  padding:22px;
  border:1px solid rgba(99,102,241,.15);
  border-radius:23px;
  background:#fff;
  box-shadow:0 25px 55px rgba(49,46,129,.11);
}

.ai-usecase-nav__heading{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:11px;
  margin-bottom:16px;
}

.ai-usecase-nav__heading > .material-symbols-outlined{
  color:#6366f1;
  font-size:30px;
}

.ai-usecase-page .ai-usecase-nav__heading p{
  margin:0;
  color:#818cf8;
  font-size:13px;
  font-weight:800;
  letter-spacing:.15em;
}

.ai-usecase-page .ai-usecase-nav__heading h2{
  margin:0;
  padding:0;
  border:0;
  color:#374151;
  font-size:16px;
  font-weight:bold;
}

.ai-usecase-page .ai-usecase-nav__heading h2::after{
  display:none;
}

.ai-usecase-nav__list{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:8px;
  margin:0;
  padding:0;
  list-style:none;
}

.ai-usecase-nav__list a{
  display:grid;
  grid-template-columns:auto 1fr;
  align-items:center;
  gap:10px;
  min-height:67px;
  padding:11px;
  border:1px solid #ececf5;
  border-radius:12px;
  background:#fff;
  color:#374151;
  transition:.25s ease;
}

.ai-usecase-nav__list a:hover{
  border-color:#c7d2fe;
  box-shadow:0 9px 20px rgba(79,70,229,.09);
  transform:translateY(-2px);
}

.ai-usecase-nav__number{
  color:#818cf8;
  font-size:16px;
  font-weight:800;
}

.ai-usecase-nav__list a > span:last-child{
  display:flex;
  flex-direction:column;
}

.ai-usecase-nav__list b{
  font-size:16px;
}

.ai-usecase-nav__list small{
  margin-top:2px;
  color:#9ca3af;
  font-size:14px;
}

.ai-usecase-nav__list{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:8px;
  margin:0;
  padding:0;
  list-style:none;
  align-items:stretch;
}

.ai-usecase-nav__list > li{
  display:flex;
  min-width:0;
}

.ai-usecase-nav__list > li > a{
  width:100%;
  height:100%;
}


/* =========================================================
   SECTION
========================================================= */

.ai-usecase-section{
  padding:100px 0;
  scroll-margin-top:100px;
}

.ai-usecase-section--soft{
  background:linear-gradient(
    180deg,
    #f8f8ff,
    #f4f5ff
  );
}

.ai-usecase-section__inner{
  width:min(1080px,calc(100% - 48px));
  margin:0 auto;
}

.ai-guide-hero__visual{
  position:relative;
  min-width:0;
    width: 85%;
    margin: 0 auto;
}

.ai-guide-hero__image{
  overflow:hidden;
  border-radius:20px;
  background:#fff;

}

.ai-guide-hero__image img{
  aspect-ratio:16 / 9;
  object-fit:cover;
}

.ai-usecase-prompt-library .ai-usecase-heading__content h2 + p {
    max-width: 780px;
    margin: 0;
    color: #5b6474;
    font-size: 16px;
    line-height: 2;


}


/* =========================================================
   HEADING
========================================================= */

.ai-usecase-heading{
  display:grid;
  grid-template-columns:80px minmax(0,1fr);
  gap:27px;
  margin-bottom:50px;
}

.ai-usecase-heading__number{
  display:flex;
  align-items:center;
  justify-content:center;
  width:80px;
  height:80px;
  border:1px solid rgba(79,70,229,.16);
  border-radius:24px;
  background:linear-gradient(145deg,#fff,#f1efff);
  color:#6366f1;
  box-shadow:0 14px 34px rgba(79,70,229,.1);
  font-size:23px;
  font-weight:800;
}

.ai-usecase-page .ai-usecase-heading__label{
  margin:0 0 7px;
  color:#6366f1;
  font-size:17px;
  font-weight:800;
  letter-spacing:.14em;
}

.ai-usecase-page .ai-usecase-heading h2{
  margin:0 0 15px;
  padding:0;
  border:0;
  color:#111827;
  font-size:clamp(28px,3.2vw,42px);
  font-weight:800;
  line-height:1.4;
  letter-spacing:-.035em;
}

.ai-usecase-page .ai-usecase-heading h2::after{
  display:none;
}

.ai-usecase-page .ai-usecase-heading__content > p:last-child{
  max-width:780px;
  margin:0 0 0 -62px;
  color:#5b6474;
  font-size:16px;
  line-height:2;
}

.ai-usecase-heading--simple{
  grid-template-columns:1fr;
}


/* =========================================================
   SUMMARY
========================================================= */

.ai-usecase-summary{
  display:grid;
  grid-template-columns:58px 1fr;
  align-items:center;
  gap:20px;
  margin-bottom:35px;
  padding:25px 27px;
  border-radius:20px;
  background:linear-gradient(120deg,#f5f3ff,#eef2ff);
}

.ai-usecase-summary__icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:54px;
  height:54px;
  border-radius:17px;
  background:linear-gradient(135deg,#4f46e5,#9333ea);
  color:#fff;
}

.ai-usecase-page .ai-usecase-summary__label{
  margin:0 0 4px;
  color:#818cf8;
  font-size:16px;
  font-weight:800;
  letter-spacing:.14em;
}

.ai-usecase-page .ai-usecase-summary h3{
  margin:0 0 7px;
  padding:0;
  border:0;
  color:#312e81;
  font-size:18px;
  font-weight:800;
}

.ai-usecase-page .ai-usecase-summary p:last-child{
  margin:0;
  color:#565f70;
  font-size:15px;
  line-height:1.9;
}


/* =========================================================
   IDEA CARDS
========================================================= */

.ai-usecase-ideas{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}

.ai-usecase-idea-card{
  padding:27px;
  border:1px solid #e6e6f2;
  border-radius:20px;
  background:#fff;
}

.ai-usecase-idea-card > .material-symbols-outlined{
  display:flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  margin-bottom:18px;
  border-radius:14px;
  background:#eef2ff;
  color:#4f46e5;
  font-size:25px;
}

.ai-usecase-page .ai-usecase-idea-card h3{
  margin:0 0 10px;
  padding:0;
  border:0;
  color:#1f2937;
  font-size:19px;
  font-weight:800;
}

.ai-usecase-page .ai-usecase-idea-card p{
  margin:0 0 18px;
  color:#5b6474;
  font-size:14px;
  line-height:1.85;
}

.ai-usecase-tags{
  display:flex;
  flex-wrap:wrap;
  gap:5px;
}

.ai-usecase-tags span{
  padding:4px 8px;
  border-radius:999px;
  background:#f5f3ff;
  color:#5b21b6;
  font-size:14px;
  font-weight:700;
}


/* =========================================================
   CASE STUDY
========================================================= */

.ai-usecase-case{
  overflow:hidden;
  border:1px solid #dddafe;
  border-radius:25px;
  background:#fff;
}

.ai-usecase-case__head{
  padding:22px 28px;
  background:linear-gradient(120deg,#eef2ff,#faf5ff);
}

.ai-usecase-case__head span{
  color:#818cf8;
  font-size:16px;
  font-weight:800;
  letter-spacing:.12em;
}

.ai-usecase-page .ai-usecase-case__head h3{
  margin:5px 0 0;
  padding:0;
  border:0;
  color:#1f2937;
  font-size:24px;
}

.ai-usecase-case__body{
  display:grid;
  grid-template-columns:minmax(300px,.85fr) 1fr;
  gap:35px;
  padding:30px;
}

.ai-usecase-case__visual{
  overflow:hidden;
  border-radius:17px;
}

.ai-usecase-case__visual img{
  aspect-ratio:4 / 5.5;
  object-fit:cover;
    border: 1px solid #0000002e;
    border-radius: 20px;
}

.ai-usecase-page .ai-usecase-case__lead{
  margin:0 0 25px;
  color:#5b6474;
  font-size:16px;
  line-height:2;
}

.ai-usecase-case__spec{
  margin:0;
}

.ai-usecase-case__spec > div{
  display:grid;
  grid-template-columns:90px 1fr;
  padding:12px 0;
  border-bottom:1px solid #eeeef5;
}

.ai-usecase-case__spec dt{
  color:#818cf8;
  font-size:15px;
  font-weight:800;
}

.ai-usecase-case__spec dd{
  margin:0;
  color:#374151;
  font-size:14px;
  font-weight:700;
}


/* =========================================================
   HOW TO FLOW
========================================================= */

.ai-usecase-flow{
  position:relative;
  display:grid;
  gap:18px;
}

.ai-usecase-flow__item{
  display:grid;
  grid-template-columns:90px 55px 1fr;
  align-items:center;
  gap:20px;
  padding:25px 28px;
  border:1px solid #e6e6f2;
  border-radius:20px;
  background:#fff;

}

.ai-usecase-flow__number{
  color:#818cf8;
  font-size:16px;
  font-weight:800;
  letter-spacing:.08em;
}

.ai-usecase-flow__icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:50px;
  height:50px;
  border-radius:15px;
  background:linear-gradient(135deg,#eef2ff,#f5f3ff);
  color:#4f46e5;
}

.ai-usecase-page .ai-usecase-flow h3{
  margin:0 0 5px;
  padding:0;
  border:0;
  color:#1f2937;
  font-size:18px;
  font-weight:800;
}

.ai-usecase-page .ai-usecase-flow p{
  margin:0;
  color:#5b6474;
  font-size:14px;
  line-height:1.85;
}


/* =========================================================
   PROMPT FORMULA
========================================================= */

.ai-usecase-prompt-formula{
  display:flex;
  align-items:stretch;
  justify-content:center;
  gap:9px;
  margin-bottom:35px;
}

.ai-usecase-prompt-formula > div{
  display:flex;
  min-width:0;
  flex:1;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  padding:18px 8px;
  border-radius:16px;
  background:#fff;
  text-align:center;
}

.ai-usecase-prompt-formula > div span{
  margin-bottom:5px;
  color:#a5b4fc;
  font-size:10px;
  font-weight:800;
}

.ai-usecase-prompt-formula > div b{
  color:#4338ca;
  font-size:16px;
}

.ai-usecase-prompt-formula > div small{
  margin-top:4px;
  color:#9ca3af;
  font-size:13px;
}

.ai-usecase-prompt-formula > i{
  align-self:center;
  color:#a5b4fc;
  font-size:20px;
  font-style:normal;
  font-weight:800;
}


/* プロンプト組み立て */

.ai-usecase-prompt-build{
  margin-bottom:25px;
  padding:28px;
  border-radius:20px;
  background:#fff;
}

.ai-usecase-page .ai-usecase-prompt-build__label{
  margin:0 0 10px;
  color:#818cf8;
  font-size:16px;
  font-weight:800;
}

.ai-usecase-page .ai-usecase-prompt-build > p:last-child{
  margin:0;
  color:#312e81;
  font-size:16px;
  font-weight:700;
  line-height:2.2;
}

.ai-usecase-prompt-build mark{
  padding:2px 3px;
  background:linear-gradient(
    transparent 55%,
    #e0e7ff 55%
  );
  color:inherit;
}


/* TIP */

.ai-usecase-tip{
  display:flex;
  gap:14px;
  padding:20px 22px;
  border-radius:16px;
  background:#ffffff;
}

.ai-usecase-tip > .material-symbols-outlined{
  color:#7c3aed;
  font-size:30px;
}

.ai-usecase-page .ai-usecase-tip h3{
  margin:0 0 6px;
  padding:0;
  border:0;
  color:#312e81;
  font-size:16px;
}

.ai-usecase-page .ai-usecase-tip p{
  margin:0;
  color:#565f70;
  font-size:16px;
  line-height:1.85;
}


/* =========================================================
   PROMPT CARD
========================================================= */

.ai-usecase-prompt-card{
  margin-bottom:20px;
  overflow:hidden;
  border:1px solid rgba(99,102,241,.16);
  border-radius:20px;
  background:#fff;
  box-shadow:0 15px 35px rgba(49,46,129,.07);
}

.ai-usecase-prompt-card__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 22px;
  border-bottom:1px solid #e9e9f3;
  background:linear-gradient(120deg,#eef2ff,#faf5ff);
}

.ai-usecase-prompt-card__head span:first-child{
  color:#818cf8;
  font-size:15px;
  font-weight:800;
  letter-spacing:.12em;
}

.ai-usecase-page .ai-usecase-prompt-card h3{
  margin:3px 0 0;
  padding:0;
  border:0;
  color:#1f2937;
  font-size:18px;
}

.ai-usecase-prompt-card__head > .material-symbols-outlined{
  color:#6366f1;
  font-size:31px;
}

.ai-usecase-prompt-card__body{
  padding:23px;
background-color: #ffffff;
}

.ai-usecase-page .ai-usecase-prompt-card__body p{
  margin:0;
  padding:20px;
  background: #ffffff;
  color:#312e81;
  font-size:16px;
  line-height:2;
}

.ai-usecase-page .ai-usecase-prompt-card__body span{
  font-weight:bold;
}

/* =========================================================
   PROMPT EXAMPLE
   追加指定
========================================================= */

.ai-usecase-prompt-card__prompt{
  margin-bottom:18px !important;
}


/* 外枠 */

.ai-usecase-prompt-detail{
  overflow:hidden;
  border-radius:14px;
  background:#fff;
    border: solid 1px #0000001f;
}


/* 見出し */

.ai-usecase-prompt-detail__heading{
  display:flex;
  align-items:center;
  gap:11px;
  padding:14px 16px;
  border-bottom:1px solid #ececf4;
  background:
    linear-gradient(
      120deg,
      #f8f8ff 0%,
      #fafaff 100%
    );
}

.ai-usecase-prompt-detail__heading >
.material-symbols-outlined{
  display:flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
  width:35px;
  height:35px;
  border-radius:10px;
  background:#eef2ff;
  color:#4f46e5;
  font-size:21px;
}

.ai-usecase-prompt-detail__heading > div{
  display:flex;
  min-width:0;
  flex-direction:column;
  gap:2px;
}

.ai-usecase-prompt-detail__heading span{
  color:#818cf8;
  font-size:14px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:.1em;
}

.ai-usecase-prompt-detail__heading b{
  color:#374151;
  font-size:16px;
  font-weight:800;
  line-height:1.5;
}


/* 一覧 */

.ai-usecase-prompt-detail__list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
}


/* 各項目 */

.ai-usecase-prompt-detail__item{
  position:relative;
  padding:16px;
  border-bottom:1px solid #eeeeF5;
}

.ai-usecase-prompt-detail__item:nth-child(odd){
  border-right:1px solid #eeeeF5;
}

.ai-usecase-prompt-detail__item:nth-last-child(-n+2){
  border-bottom:0;
}


/* ラベル */

.ai-usecase-prompt-detail__label{
  display:inline-flex;
  align-items:center;
  margin-bottom:7px;
  padding:4px 8px;
  border-radius:999px;
  background:#eef2ff;
  color:#4f46e5;
  font-size:16px;
  font-weight:800;
  line-height:1.2;
}


/* プロンプト */

.ai-usecase-page
.ai-usecase-prompt-detail__item p{
  margin:0;
  color:#4b5563;
  font-size:16px;
  font-weight:600;
  line-height:1.8;
}


/* =========================================================
   SMARTPHONE
========================================================= */

@media screen and (max-width:767px){

  .ai-usecase-prompt-detail{
    border-radius:12px;
  }

  .ai-usecase-prompt-detail__heading{
    padding:13px 14px;
  }

  .ai-usecase-prompt-detail__heading >
  .material-symbols-outlined{
    width:32px;
    height:32px;
    font-size:19px;
  }

  .ai-usecase-prompt-detail__heading b{
    font-size:14px;
  }

  .ai-usecase-prompt-detail__list{
    grid-template-columns:1fr;
  }

  .ai-usecase-prompt-detail__item{
    padding:14px;
    border-right:0 !important;
    border-bottom:1px solid #eeeeF5 !important;
  }

  .ai-usecase-prompt-detail__item:last-child{
    border-bottom:0 !important;
  }

  .ai-usecase-prompt-detail__label{
    font-size:15px;
  }

  .ai-usecase-page
  .ai-usecase-prompt-detail__item p{
    font-size:13px;
    line-height:1.75;
  }


}

/* =========================================================
   IMPROVE
========================================================= */

.ai-usecase-improve{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
}

.ai-usecase-improve article{
  padding:23px;
  border-radius:18px;
  background:#fff;
}

.ai-usecase-improve article > span{
  display:inline-block;
  margin-bottom:7px;
  color:#818cf8;
  font-size:14px;
  font-weight:800;
}

.ai-usecase-page .ai-usecase-improve h3{
  margin:0;
  padding:0;
  border:0;
  color:#374151;
  font-size:17px;
}

.ai-usecase-page .ai-usecase-improve p{
  margin:8px 0;
  color:#a5b4fc;
  text-align: center;
}

.ai-usecase-improve strong{
  display:block;
  padding:12px;
  border-radius:10px;
  background:#f5f3ff;
  color:#374151;
  font-size:14px;
  line-height:1.7;
  font-weight: bold;
}


/* =========================================================
   ORDER FLOW
========================================================= */

.ai-usecase-order-flow{
  display:grid;
  grid-template-columns:1fr auto 1fr auto 1fr auto 1fr;
  align-items:center;
  gap:10px;
  margin-bottom:30px;
}

.ai-usecase-order-flow article{
  position:relative;
  padding:22px 15px;
  border:1px solid #e5e5f1;
  border-radius:18px;
  background:#fff;
  text-align:center;
}

.ai-usecase-order-flow article > .material-symbols-outlined{
  color:#4f46e5;
  font-size:30px;
}



.ai-usecase-page .ai-usecase-order-flow h3{
  margin:8px 0 5px;
  padding:0;
  border:0;
  color:#1f2937;
  font-size:16px;
}

.ai-usecase-page .ai-usecase-order-flow p{
  margin:0;
  color:#6b7280;
  font-size:15px;
  line-height:1.7;
}

.ai-usecase-order-flow__arrow{
  color:#a5b4fc;
  font-size:20px;
  font-weight:800;
}


/* =========================================================
   NOTICE
========================================================= */

.ai-usecase-notice{
  display:flex;
  gap:13px;
  margin-top:28px;
  padding:20px 22px;
  border:1px solid #fde68a;
  border-radius:16px;
  background:#fffbeb;
}

.ai-usecase-notice > .material-symbols-outlined{
  flex:0 0 auto;
  color:#d97706;
}

.ai-usecase-page .ai-usecase-notice h3{
  margin:0 0 6px;
  padding:0;
  border:0;
  color:#1f2937;
  font-size:16px;
}

.ai-usecase-page .ai-usecase-notice p{
  margin:0;
  color:#565f70;
  font-size:16px;
  line-height:1.85;
}


/* =========================================================
   CTA
========================================================= */

.ai-usecase-cta{
  display:grid;
  grid-template-columns:1fr minmax(300px,.7fr);
  align-items:center;
  gap:35px;
  margin-top:50px;
  padding:38px;
  border-radius:25px;
  background:
    radial-gradient(
      circle at 10% 20%,
      rgba(129,140,248,.32),
      transparent 32%
    ),
    linear-gradient(
      135deg,
      #111827,
      #1e1b4b 52%,
      #312e81
    );

}

.ai-usecase-page .ai-usecase-cta__content > p{
  margin:0 0 8px;
  color:#a5b4fc;
  font-size:11px;
  font-weight:800;
  letter-spacing:.15em;
}

.ai-usecase-page .ai-usecase-cta h2{
  margin:0 0 12px;
  padding:0;
  border:0;
  color:#fff;
  font-size:clamp(25px,3vw,35px);
  font-weight:800;
  line-height:1.5;
}

.ai-usecase-page .ai-usecase-cta h2::after{
  display:none;
}

.ai-usecase-cta__content > span{
  color:rgba(255,255,255,.7);
  font-size:16px;
  line-height:1.8;
}

.ai-usecase-cta__actions{
  display:flex;
  flex-direction:column;
  gap:10px;
}

.ai-usecase-button{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:55px;
  padding:11px 17px;
  border-radius:14px;
  font-weight:800;
  transition:.25s ease;
}

.ai-usecase-button b{font-size:16px;}

.ai-usecase-button:hover{
  transform:translateY(-2px);
}

.ai-usecase-button--primary{
  justify-content:flex-start;
  background:linear-gradient(110deg,#6366f1,#9333ea);
  color:#fff !important;
  box-shadow:0 15px 30px rgba(79,70,229,.28);
}

.ai-usecase-button--primary > span:nth-child(2){
  display:flex;
  flex:1;
  flex-direction:column;
}

.ai-usecase-button--primary small{
  color:rgba(255,255,255,.7);
  font-size:13px;
  font-weight:500;
}

.ai-usecase-button--secondary{
  min-height:43px;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.09);
  color:#fff !important;
  font-size:16px;
}


/* =========================================================
   TABLET
========================================================= */

@media screen and (max-width:1200px){

  .ai-usecase-hero__inner{
    grid-template-columns:1fr;
  }

  .ai-usecase-hero__visual{
    width:70%;
    margin:0 auto;
  }


  .ai-usecase-prompt-formula{
    flex-wrap:wrap;
  }

  .ai-usecase-prompt-formula > div{
    min-width:28%;
  }

  .ai-usecase-prompt-formula > i{
    display:none;
  }

  .ai-usecase-order-flow{
    grid-template-columns:repeat(2,1fr);
  }

  .ai-usecase-order-flow__arrow{
    display:none;
  }

  .ai-usecase-cta{
    grid-template-columns:1fr;
  }
  .ai-usecase-case__body{
    grid-template-columns:1fr;
    padding:20px;
  }

  .ai-usecase-nav__list{
    grid-template-columns:repeat(2,1fr);
  }

}


/* =========================================================
   SMARTPHONE
========================================================= */

@media screen and (max-width:767px){

.ai-guide-hero__visual { width: 100%;}

  .ai-usecase-hero__inner{
    width:calc(100% - 28px);
    padding:50px 0 70px;
  }

  .ai-usecase-page .ai-usecase-hero__title{
    font-size:clamp(31px,10vw,42px);
  }

  .ai-usecase-page .ai-usecase-hero__lead{
    font-size:15px;
    line-height:1.9;
  }

  .ai-usecase-hero__points{
    display:grid;
  }

  .ai-usecase-hero__visual{
    width:90%;
  }


  /* NAV */

  .ai-usecase-nav{
    margin-top:-20px;
  }

  .ai-usecase-nav__inner{
    width:calc(100% - 28px);
    padding:15px;
  }




  /* SECTION */

  .ai-usecase-section{
    padding:70px 0;
  }

  .ai-usecase-section__inner{
    width:calc(100% - 28px);
  }


  /* HEADING */

  .ai-usecase-heading{
    grid-template-columns:52px 1fr;
    gap:15px;
    margin-bottom:35px;
  }

  .ai-usecase-heading__number{
    width:52px;
    height:52px;
    border-radius:16px;
    font-size:16px;
  }

  .ai-usecase-page .ai-usecase-heading h2{
    font-size:25px;
  }

  .ai-usecase-page .ai-usecase-heading__content > p:last-child{
    grid-column:1 / -1;
    font-size:15px;
    line-height:1.85;
  }

  .ai-usecase-heading--simple{
    display:block;
  }


  /* SUMMARY */

  .ai-usecase-summary{
    grid-template-columns:43px 1fr;
    gap:13px;
    padding:18px;
  }

  .ai-usecase-summary__icon{
    width:43px;
    height:43px;
  }


  /* IDEAS */

  .ai-usecase-ideas{
    grid-template-columns:1fr;
  }


  /* CASE */


  .ai-usecase-case__visual{
    width:80%;
    margin:0 auto;
  }


  /* FLOW */

  .ai-usecase-flow__item{
    grid-template-columns:45px 1fr;
    gap:13px;
    padding:20px;
  }

  .ai-usecase-flow__number{
    grid-column:1 / -1;
  }

  .ai-usecase-flow__icon{
    width:43px;
    height:43px;
  }


  /* PROMPT */

  .ai-usecase-prompt-formula{
    display:grid;
    grid-template-columns:repeat(2,1fr);
  }

  .ai-usecase-prompt-formula > div{
    min-width:0;
  }

  .ai-usecase-prompt-build{
    padding:20px;
  }

  .ai-usecase-page .ai-usecase-prompt-build > p:last-child{
    font-size:15px;
  }


  /* IMPROVE */

  .ai-usecase-improve{
    grid-template-columns:1fr;
  }


  /* ORDER */

  .ai-usecase-order-flow{
    grid-template-columns:1fr;
  }

  .ai-usecase-order-flow article{
    text-align:left;
    padding-left:55px;
  }

  .ai-usecase-order-flow article >
  .material-symbols-outlined{
    position:absolute;
    top:50%;
    left:17px;
    transform:translateY(-50%);
  }


  /* CTA */

  .ai-usecase-cta{
    padding:27px 20px;
  }

  .ai-usecase-page .ai-usecase-cta h2{
    font-size:24px;
  }

}


/* =========================================================
   SMALL PHONE
========================================================= */

@media screen and (max-width:390px){

  .ai-usecase-nav__list{
    grid-template-columns:repeat(1,1fr);
  }


  .ai-usecase-prompt-formula{
    grid-template-columns:1fr;
  }

}


/* =========================================================
   REDUCED MOTION
========================================================= */

@media (prefers-reduced-motion:reduce){

  .ai-usecase-page *,
  .ai-usecase-page *::before,
  .ai-usecase-page *::after{
    transition-duration:.01ms !important;
    animation-duration:.01ms !important;
  }

}


/* =========================================================
   AI USECASE
   PROMPT LIBRARY
========================================================= */

.ai-usecase-prompt-library{
  margin-top:60px;
}

.template-section h2 + p {
    font-size: 16px;
}


/* =========================================================
   FILTER
========================================================= */

.ai-usecase-prompt-library__filter{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:12px 0 24px;
  padding:14px;
  border:1px solid #e5e7eb;
  border-radius:14px;
  background:#f8fafc;
}


/* フィルターボタン */

.ai-usecase-prompt-filter{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:5px;
  min-height:38px;
  padding:7px 13px;
  border:1px solid #dfe3e8;
  border-radius:100px;
  background:#fff;
  color:#4b5563;
  font-family:inherit;
  font-size:15px;
  font-weight:700;
  line-height:1;
  cursor:pointer;
  transition:
    color .2s ease,
    border-color .2s ease,
    background-color .2s ease,
    box-shadow .2s ease,
    transform .2s ease;
}

.ai-usecase-prompt-filter .material-symbols-outlined{
  font-size:17px;
  line-height:1;
}

.ai-usecase-prompt-filter:hover{
  border-color:#aeb5ff;
  color:#3f46c8;
  box-shadow:0 3px 9px rgba(49,46,129,.08);
  transform:translateY(-1px);
}


/* 選択中 */

.ai-usecase-prompt-filter.is-active{
  border-color:#4f46e5;
  background:#4f46e5;
  color:#fff;
  box-shadow:0 4px 10px rgba(79,70,229,.18);
}


/* =========================================================
   PROMPT GRID
========================================================= */

.ai-usecase-prompt-library__grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
  align-items:stretch;
  grid-auto-flow:row;
}


/* =========================================================
   PROMPT CARD
========================================================= */

.ai-usecase-prompt-piece{
  --prompt-color:#6366f1;
  --prompt-light:#eef2ff;
  --prompt-border:#c7d2fe;

  position:relative;
  display:flex;
  flex-direction:column;
  width:100%;
  min-width:0;
  padding:17px 17px 15px;
  overflow:hidden;

  border:1px solid var(--prompt-border);
  border-radius:13px;

  background:
    linear-gradient(
      135deg,
      var(--prompt-light) 0,
      #fff 38%,
      #fff 100%
    );

  color:#374151;
  font-family:inherit;
  text-align:left;

  box-shadow:
    0 3px 10px rgba(15,23,42,.04);

  cursor:pointer;

  transition:
    transform .2s ease,
    box-shadow .2s ease,
    border-color .2s ease;
}


/* カード左上のアクセント */

.ai-usecase-prompt-piece::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:4px;
  height:100%;
  background:var(--prompt-color);
  opacity:.85;
}


.ai-usecase-prompt-piece:hover{
  transform:translateY(-2px);
  box-shadow:
    0 8px 22px rgba(15,23,42,.09);
}


.ai-usecase-prompt-piece:focus-visible{
  outline:3px solid rgba(99,102,241,.25);
  outline-offset:2px;
}


/* =========================================================
   CATEGORY COLOR
========================================================= */

/* 構図・配置 */

.ai-usecase-prompt-piece[data-prompt-category="layout"]{
  --prompt-color:#6366f1;
  --prompt-light:#eef2ff;
  --prompt-border:#c7d2fe;
}


/* 主役・被写体 */

.ai-usecase-prompt-piece[data-prompt-category="subject"]{
  --prompt-color:#e11d48;
  --prompt-light:#fff1f2;
  --prompt-border:#fecdd3;
}


/* 背景 */

.ai-usecase-prompt-piece[data-prompt-category="background"]{
  --prompt-color:#059669;
  --prompt-light:#ecfdf5;
  --prompt-border:#a7f3d0;
}


/* 色 */

.ai-usecase-prompt-piece[data-prompt-category="color"]{
  --prompt-color:#d97706;
  --prompt-light:#fffbeb;
  --prompt-border:#fde68a;
}


/* 雰囲気 */

.ai-usecase-prompt-piece[data-prompt-category="mood"]{
  --prompt-color:#9333ea;
  --prompt-light:#faf5ff;
  --prompt-border:#e9d5ff;
}


/* 光・質感 */

.ai-usecase-prompt-piece[data-prompt-category="light"]{
  --prompt-color:#ea580c;
  --prompt-light:#fff7ed;
  --prompt-border:#fed7aa;
}


/* 情報設計 */

.ai-usecase-prompt-piece[data-prompt-category="design"]{
  --prompt-color:#0284c7;
  --prompt-light:#f0f9ff;
  --prompt-border:#bae6fd;
}


/* 仕上がり */

.ai-usecase-prompt-piece[data-prompt-category="finish"]{
  --prompt-color:#475569;
  --prompt-light:#f8fafc;
  --prompt-border:#cbd5e1;
}


/* =========================================================
   CARD HEADER
========================================================= */

.ai-usecase-prompt-piece__head{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:11px;
}


/* アイコン */

.ai-usecase-prompt-piece__icon{
  display:flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;

  width:30px;
  height:30px;

  border-radius:8px;

  background:var(--prompt-color);
  color:#fff;

  box-shadow:
    0 3px 7px rgba(15,23,42,.10);
}

.ai-usecase-prompt-piece__icon .material-symbols-outlined{
  font-size:18px;
  line-height:1;
}


/* カテゴリ */

.ai-usecase-prompt-piece__category{
  color:var(--prompt-color);
  font-size:16px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:.04em;
}


/* =========================================================
   GENERATION IMAGE
========================================================= */

.ai-usecase-prompt-piece__result{
  display:block;
  margin-bottom:11px;
}


/* 「生成イメージ」ラベル */

.ai-usecase-prompt-piece__result-label{
  display:inline-block;
  margin-bottom:5px;
  padding:3px 7px;

  border-radius:4px;

  background:var(--prompt-light);
  color:var(--prompt-color);

  font-size:14px;
  font-weight:800;
  line-height:1.2;
  letter-spacing:.04em;
}


/* 生成イメージ本文 */

.ai-usecase-prompt-piece__result-text{
  display:block;

  color:#111827;

  font-size:18px;
  font-weight:800;
  line-height:1.5;
}


/* =========================================================
   PROMPT TEXT
========================================================= */

.ai-usecase-prompt-piece__text{
  display:block;
  flex:1;

  padding-top:10px;

  border-top:1px dashed
    color-mix(in srgb, var(--prompt-color) 25%, #e5e7eb);

  color:#4b5563;

  font-size:13px;
  font-weight:500;
  line-height:1.75;
}


/* =========================================================
   COPY BUTTON
========================================================= */

.ai-usecase-prompt-piece__copy{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:4px;

  margin-top:13px;

  color:var(--prompt-color);

  font-size:15px;
  font-weight:800;
  line-height:1;

  transition:
    transform .2s ease,
    opacity .2s ease;
}

.ai-usecase-prompt-piece__copy .material-symbols-outlined{
  font-size:20px;
}


/* hover */

.ai-usecase-prompt-piece:hover
.ai-usecase-prompt-piece__copy{
  transform:translateX(2px);
}


/* コピー完了時
   JS側で .is-copied を付与
========================================================= */

.ai-usecase-prompt-piece.is-copied{
  border-color:var(--prompt-color);
}



/* =========================================================
   FILTER HIDE
========================================================= */

.ai-usecase-prompt-piece.is-hidden{
  display:none;
}


/* =========================================================
   TABLET
========================================================= */

@media screen and (max-width:1024px){

  .ai-usecase-prompt-library{
    margin-top:50px;
  }

  .ai-usecase-prompt-library__grid{
    grid-template-columns:1fr;
  }

}


/* =========================================================
   SMARTPHONE
========================================================= */

@media screen and (max-width:767px){

  .ai-usecase-prompt-library{
    margin-top:40px;
  }


  /* -----------------------------------------
     FILTER
  ----------------------------------------- */

  .ai-usecase-prompt-library__filter{
    gap:7px;
    margin:20px 0 18px;
    padding:10px;
    border-radius:11px;
  }

  .ai-usecase-prompt-filter{
    min-height:36px;
    padding:7px 11px;
    font-size:15px;
  }

  .ai-usecase-prompt-filter .material-symbols-outlined{
    font-size:16px;
  }


  /* -----------------------------------------
     GRID
  ----------------------------------------- */

  .ai-usecase-prompt-library__grid{
    grid-template-columns:1fr;
    gap:10px;
  }


  /* -----------------------------------------
     CARD
  ----------------------------------------- */

  .ai-usecase-prompt-piece{
    padding:15px 14px 13px;
    border-radius:11px;
  }


  /* -----------------------------------------
     CATEGORY
  ----------------------------------------- */

  .ai-usecase-prompt-piece__head{
    gap:7px;
    margin-bottom:9px;
  }

  .ai-usecase-prompt-piece__icon{
    width:28px;
    height:28px;
    border-radius:7px;
  }

  .ai-usecase-prompt-piece__icon
  .material-symbols-outlined{
    font-size:17px;
  }

  .ai-usecase-prompt-piece__category{
    font-size:16px;
  }


  /* -----------------------------------------
     GENERATION IMAGE
  ----------------------------------------- */

  .ai-usecase-prompt-piece__result{
    margin-bottom:9px;
  }

  .ai-usecase-prompt-piece__result-label{
    margin-bottom:4px;
    font-size:12px;
  }

  .ai-usecase-prompt-piece__result-text{
    font-size:16px;
    line-height:1.45;
  }


  /* -----------------------------------------
     PROMPT
  ----------------------------------------- */

  .ai-usecase-prompt-piece__text{
    padding-top:9px;
    font-size:13px;
    line-height:1.7;
  }


  /* -----------------------------------------
     COPY
  ----------------------------------------- */

  .ai-usecase-prompt-piece__copy{
    margin-top:11px;
    font-size:11px;
  }

}

/* =========================================================
   AI USECASE
   CLICKABLE UI
   クリック可能要素の視認性・操作感を統一
========================================================= */


/* ---------------------------------------------------------
   共通
--------------------------------------------------------- */

.ai-usecase-page a,
.ai-usecase-page button{
  -webkit-tap-highlight-color:transparent;
}

.ai-usecase-page a[href],
.ai-usecase-page button:not(:disabled){
  cursor:pointer;
}


/* キーボード操作時 */

.ai-usecase-page a[href]:focus-visible,
.ai-usecase-page button:not(:disabled):focus-visible{
  outline:3px solid rgba(99,102,241,.30);
  outline-offset:3px;
}


/* ---------------------------------------------------------
   ページ内ナビ
--------------------------------------------------------- */

.ai-usecase-nav__list a{
  position:relative;
  cursor:pointer;

  transition:
    transform .22s ease,
    border-color .22s ease,
    background-color .22s ease,
    box-shadow .22s ease;
}


/* クリックできることを示す右側アクセント */

.ai-usecase-nav__list a::after{
  content:"›";

  position:absolute;
  top:50%;
  right:11px;

  color:#a5b4fc;

  font-size:22px;
  font-weight:700;
  line-height:1;

  transform:translateY(-50%);

  transition:
    color .22s ease,
    transform .22s ease;
}


.ai-usecase-nav__list a:hover{
  border-color:#aeb5ff;

  background:
    linear-gradient(
      135deg,
      #ffffff 0%,
      #f7f7ff 100%
    );

  box-shadow:
    0 8px 20px rgba(79,70,229,.11);

  transform:translateY(-2px);
}


.ai-usecase-nav__list a:hover::after{
  color:#6366f1;
  transform:translate(3px,-50%);
}


.ai-usecase-nav__list a:hover
.ai-usecase-nav__number{
  color:#4f46e5;
}


/* 矢印分のスペースを確保 */

.ai-usecase-nav__list a{
  padding-right:32px;
}


/* ---------------------------------------------------------
   通常リンク
--------------------------------------------------------- */

.ai-usecase-page a:not(.ai-usecase-nav__list a)
:not(.ai-usecase-button){
  transition:
    color .2s ease,
    opacity .2s ease;
}


/* ---------------------------------------------------------
   CTA BUTTON
--------------------------------------------------------- */

.ai-usecase-button{
  position:relative;
  cursor:pointer;

  transition:
    transform .22s ease,
    box-shadow .22s ease,
    filter .22s ease;
}


.ai-usecase-button:hover{
  transform:translateY(-3px);
}


.ai-usecase-button--primary:hover{
  filter:brightness(1.06);

  box-shadow:
    0 18px 34px rgba(79,70,229,.38);
}


.ai-usecase-button--secondary:hover{
  background:rgba(255,255,255,.15);

  box-shadow:
    0 8px 20px rgba(0,0,0,.12);
}


.ai-usecase-button:active{
  transform:translateY(0);
}


/* ---------------------------------------------------------
   PROMPT FILTER
--------------------------------------------------------- */

.ai-usecase-prompt-filter{
  position:relative;

  transition:
    transform .18s ease,
    color .18s ease,
    border-color .18s ease,
    background-color .18s ease,
    box-shadow .18s ease;
}


.ai-usecase-prompt-filter:hover{
  border-color:#818cf8;
  background:#f5f3ff;
  color:#4338ca;

  box-shadow:
    0 4px 11px rgba(79,70,229,.12);

  transform:translateY(-2px);
}


.ai-usecase-prompt-filter.is-active:hover{
  background:#4338ca;
  color:#fff;
}


.ai-usecase-prompt-filter:active{
  transform:translateY(0);
}


/* ---------------------------------------------------------
   PROMPT COPY CARD
--------------------------------------------------------- */

.ai-usecase-prompt-piece{
  cursor:pointer;

  transition:
    transform .2s ease,
    border-color .2s ease,
    box-shadow .2s ease,
    background-color .2s ease;
}


/* コピーできるカードを少し浮かせる */

.ai-usecase-prompt-piece:hover{
  border-color:var(--prompt-color);

  box-shadow:
    0 10px 25px rgba(15,23,42,.11);

  transform:translateY(-3px);
}


/* COPY部分 */

.ai-usecase-prompt-piece__copy{
  padding:6px 9px;

  border-radius:7px;

  background:
    color-mix(
      in srgb,
      var(--prompt-color) 8%,
      #fff
    );

  transition:
    transform .2s ease,
    background-color .2s ease;
}


.ai-usecase-prompt-piece:hover
.ai-usecase-prompt-piece__copy{
  background:
    color-mix(
      in srgb,
      var(--prompt-color) 15%,
      #fff
    );

  transform:translateX(3px);
}


/* コピーアイコン */

.ai-usecase-prompt-piece:hover
.ai-usecase-prompt-piece__copy
.material-symbols-outlined{
  transform:scale(1.08);
}


.ai-usecase-prompt-piece__copy
.material-symbols-outlined{
  transition:transform .2s ease;
}


/* 押した瞬間 */

.ai-usecase-prompt-piece:active{
  transform:translateY(-1px);
}


/* ---------------------------------------------------------
   コピー完了
--------------------------------------------------------- */

.ai-usecase-prompt-piece.is-copied{
  border-color:var(--prompt-color);

  box-shadow:
    0 0 0 2px
    color-mix(
      in srgb,
      var(--prompt-color) 15%,
      transparent
    );
}


/* ---------------------------------------------------------
   TOUCH DEVICE
   スマホではhover残りを抑制
--------------------------------------------------------- */

@media (hover:none){

  .ai-usecase-nav__list a:hover,
  .ai-usecase-button:hover,
  .ai-usecase-prompt-filter:hover,
  .ai-usecase-prompt-piece:hover{
    transform:none;
  }

}


/* =========================================================
   SMARTPHONE
========================================================= */

@media screen and (max-width:767px){

  /* タップ領域を確保 */

  .ai-usecase-nav__list a{
    min-height:68px;
    padding-right:29px;
  }


  .ai-usecase-prompt-filter{
    min-height:40px;
  }


  .ai-usecase-button{
    min-height:54px;
  }


  /* ナビ矢印 */

  .ai-usecase-nav__list a::after{
    right:9px;
    font-size:20px;
  }


  /* COPY部分を少し目立たせる */

  .ai-usecase-prompt-piece__copy{
    margin-top:12px;
    padding:7px 9px;

    background:
      color-mix(
        in srgb,
        var(--prompt-color) 10%,
        #fff
      );

    font-size:13px;
  }

}

/* =========================================================
   CLICKABLE UI
   クリック可能要素を明確化
========================================================= */


/* =========================================================
   01. ページ内ナビゲーション
========================================================= */

.ai-usecase-nav__list a{
  position:relative;
  padding-right:38px;

  /* 通常時からクリック要素だと分かる色 */
  border:1.5px solid #c7d2fe;
  background:linear-gradient(
    135deg,
    #f5f7ff 0%,
    #eef2ff 100%
  );

  color:#312e81;

  cursor:pointer;

  box-shadow:
    0 3px 8px rgba(79,70,229,.06);

  transition:
    background .22s ease,
    border-color .22s ease,
    color .22s ease,
    box-shadow .22s ease,
    transform .22s ease;
}


/* 番号 */

.ai-usecase-nav__number{
  color:#6366f1;
  transition:color .22s ease;
}


/* タイトル */

.ai-usecase-nav__list b{
  color:#312e81;
  transition:color .22s ease;
}


/* 補足 */

.ai-usecase-nav__list small{
  color:#6b7280;
  transition:color .22s ease;
}


/* 常時矢印表示 */

.ai-usecase-nav__list a::after{
  content:"›";

  position:absolute;
  top:50%;
  right:14px;

  color:#6366f1;

  font-size:25px;
  font-weight:800;
  line-height:1;

  transform:translateY(-50%);

  transition:
    color .22s ease,
    transform .22s ease;
}


/* hover */

.ai-usecase-nav__list a:hover{
  border-color:#4f46e5;

  background:linear-gradient(
    135deg,
    #6366f1 0%,
    #4f46e5 100%
  );

  color:#fff;

  box-shadow:
    0 9px 20px rgba(79,70,229,.22);

  transform:translateY(-3px);
}


.ai-usecase-nav__list a:hover
.ai-usecase-nav__number{
  color:#c7d2fe;
}


.ai-usecase-nav__list a:hover b{
  color:#fff;
}


.ai-usecase-nav__list a:hover small{
  color:#e0e7ff;
}


.ai-usecase-nav__list a:hover::after{
  color:#fff;
  transform:translate(4px,-50%);
}


/* 押した瞬間 */

.ai-usecase-nav__list a:active{
  transform:translateY(0);
  box-shadow:0 3px 8px rgba(79,70,229,.15);
}


/* =========================================================
   02. プロンプトフィルター
========================================================= */

.ai-usecase-prompt-filter{
  border:1.5px solid #c7d2fe;
  background:#eef2ff;
  color:#4338ca;

  cursor:pointer;

  box-shadow:0 2px 5px rgba(79,70,229,.05);

  transition:
    background .2s ease,
    border-color .2s ease,
    color .2s ease,
    transform .2s ease,
    box-shadow .2s ease;
}


.ai-usecase-prompt-filter:hover{
  border-color:#6366f1;
  background:#e0e7ff;
  color:#312e81;

  box-shadow:0 5px 12px rgba(79,70,229,.15);

  transform:translateY(-2px);
}


/* 選択中 */

.ai-usecase-prompt-filter.is-active{
  border-color:#4338ca;

  background:linear-gradient(
    135deg,
    #6366f1,
    #4f46e5
  );

  color:#fff;

  box-shadow:
    0 5px 12px rgba(79,70,229,.22);
}


.ai-usecase-prompt-filter.is-active:hover{
  background:linear-gradient(
    135deg,
    #4f46e5,
    #3730a3
  );

  color:#fff;
}


/* =========================================================
   03. コピー可能なプロンプトカード
========================================================= */

.ai-usecase-prompt-piece{
  cursor:pointer;

  transition:
    transform .2s ease,
    border-color .2s ease,
    box-shadow .2s ease;
}


/* COPYをボタンとして明確化 */

.ai-usecase-prompt-piece__copy{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:6px;

  align-self:flex-end;

  min-width:90px;
  margin-top:14px;
  padding:8px 13px;

  border:1px solid var(--prompt-color);
  border-radius:8px;

  background:var(--prompt-color);
  color:#fff;

  font-size:13px;
  font-weight:800;

  box-shadow:
    0 3px 8px rgba(15,23,42,.10);

  transition:
    transform .2s ease,
    filter .2s ease,
    box-shadow .2s ease;
}


.ai-usecase-prompt-piece__copy
.material-symbols-outlined{
  color:#fff;
  font-size:18px;
}


/* カードhover */

.ai-usecase-prompt-piece:hover{
  border-color:var(--prompt-color);

  box-shadow:
    0 10px 25px rgba(15,23,42,.13);

  transform:translateY(-3px);
}


/* COPYも反応 */

.ai-usecase-prompt-piece:hover
.ai-usecase-prompt-piece__copy{
  filter:brightness(.9);

  box-shadow:
    0 5px 12px rgba(15,23,42,.16);

  transform:translateX(2px);
}


/* =========================================================
   04. CTA
========================================================= */

.ai-usecase-button{
  cursor:pointer;

  transition:
    transform .22s ease,
    box-shadow .22s ease,
    filter .22s ease;
}


/* メインCTA */

.ai-usecase-button--primary{
  border:1px solid rgba(255,255,255,.18);

  background:linear-gradient(
    110deg,
    #6366f1,
    #9333ea
  );

  box-shadow:
    0 8px 20px rgba(79,70,229,.32);
}


.ai-usecase-button--primary:hover{
  filter:brightness(1.12);

  box-shadow:
    0 14px 30px rgba(99,102,241,.45);

  transform:translateY(-3px);
}


/* サブCTA */

.ai-usecase-button--secondary{
  border:1px solid rgba(255,255,255,.45);
  background:rgba(255,255,255,.12);
}


.ai-usecase-button--secondary:hover{
  border-color:#fff;
  background:#fff;
  color:#312e81 !important;

  transform:translateY(-2px);
}


/* =========================================================
   05. FOCUS
   キーボード操作
========================================================= */

.ai-usecase-page a[href]:focus-visible,
.ai-usecase-page button:focus-visible{
  outline:3px solid #818cf8;
  outline-offset:3px;
}


/* =========================================================
   SMARTPHONE
========================================================= */

@media screen and (max-width:767px){

  /* ナビ */

  .ai-usecase-nav__list a{
    min-height:70px;
    padding-right:34px;
  }

  .ai-usecase-nav__list a::after{
    right:10px;
    font-size:22px;
  }


  /* フィルター */

  .ai-usecase-prompt-filter{
    min-height:40px;
  }


  /* COPY */

  .ai-usecase-prompt-piece__copy{
    min-width:95px;
    padding:9px 13px;
    font-size:13px;
  }

}


/* =========================================================
   TOUCH DEVICE
========================================================= */

@media (hover:none){

  .ai-usecase-nav__list a:hover,
  .ai-usecase-prompt-filter:hover,
  .ai-usecase-prompt-piece:hover,
  .ai-usecase-button:hover{
    transform:none;
  }

}

/* =========================================================
   ITEM IMAGE
   クリック可能画像
========================================================= */

.item_image{
  cursor:pointer;

  border-radius:18px;

  transition:
    transform .3s ease,
    box-shadow .3s ease,
    filter .3s ease;
}


/* hover */

.item_image:hover{
  transform:scale(1.025);

  filter:
    brightness(1.03)
    saturate(1.04);

  box-shadow:
    0 10px 28px rgba(79,70,229,.18);
}


/* 押した瞬間 */

.item_image:active{
  transform:scale(.99);
}


/* キーボード操作可能な場合 */

.item_image:focus-visible{
  outline:3px solid #818cf8;
  outline-offset:4px;
}


/* =========================================================
   TOUCH DEVICE
========================================================= */

@media (hover:none){

  .item_image:hover{
    transform:none;
    filter:none;
    box-shadow:none;
  }

}